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Thu, 23 Jan 2020 13:52:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1579787548; 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=AXIT44GcHEqEwBK1Et1RXBJRReAeylHT2cdVn0IclIY=; b=LG7Ia07+3f2oZceKkNx2DQYCQ/jHL746/bTyvNm02/lCWbwvyjrKg0CY1dvER3YGXsVyQt uDpKBMfVXs4GO3mdNJC33iRho2thpJ7nUUFXaWGQiO91C+q1+cMxtln2TACVHlyswHXG+3 WQMvS9Zz/drOnCL1y8dcpzxsojvc93I= From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 45/59] object: add object_class_property_add_link() Date: Thu, 23 Jan 2020 14:50:35 +0100 Message-Id: <1579787449-27599-46-git-send-email-pbonzini@redhat.com> In-Reply-To: <1579787449-27599-1-git-send-email-pbonzini@redhat.com> References: <1579787449-27599-1-git-send-email-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-MC-Unique: PWM2SyfcPRucYRaxG2OgFA-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" From: Marc-Andr=C3=A9 Lureau Signed-off-by: Marc-Andr=C3=A9 Lureau Message-Id: <20200110153039.1379601-17-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini --- include/qom/object.h | 9 +++++++++ qom/object.c | 46 +++++++++++++++++++++++++++++++++++++++++++++- 2 files changed, 54 insertions(+), 1 deletion(-) diff --git a/include/qom/object.h b/include/qom/object.h index 24d6ebe..5e2f60d 100644 --- a/include/qom/object.h +++ b/include/qom/object.h @@ -1514,6 +1514,7 @@ typedef enum { =20 /* private */ OBJ_PROP_LINK_DIRECT =3D 0x2, + OBJ_PROP_LINK_CLASS =3D 0x4, } ObjectPropertyLinkFlags; =20 /** @@ -1562,6 +1563,14 @@ void object_property_add_link(Object *obj, const cha= r *name, ObjectPropertyLinkFlags flags, Error **errp); =20 +ObjectProperty *object_class_property_add_link(ObjectClass *oc, + const char *name, + const char *type, ptrdiff_t offset, + void (*check)(const Object *obj, const char = *name, + Object *val, Error **errp), + ObjectPropertyLinkFlags flags, + Error **errp); + /** * object_property_add_str: * @obj: the object to add a property to diff --git a/qom/object.c b/qom/object.c index b2bc87b..a3da546 100644 --- a/qom/object.c +++ b/qom/object.c @@ -1716,6 +1716,7 @@ typedef struct { union { Object **targetp; Object *target; /* if OBJ_PROP_LINK_DIRECT, when holding the point= er */ + ptrdiff_t offset; /* if OBJ_PROP_LINK_CLASS */ }; void (*check)(const Object *, const char *, Object *, Error **); ObjectPropertyLinkFlags flags; @@ -1726,6 +1727,8 @@ object_link_get_targetp(Object *obj, LinkProperty *lp= rop) { if (lprop->flags & OBJ_PROP_LINK_DIRECT) { return &lprop->target; + } else if (lprop->flags & OBJ_PROP_LINK_CLASS) { + return (void *)obj + lprop->offset; } else { return lprop->targetp; } @@ -1841,7 +1844,9 @@ static void object_release_link_property(Object *obj,= const char *name, if ((prop->flags & OBJ_PROP_LINK_STRONG) && *targetp) { object_unref(*targetp); } - g_free(prop); + if (!(prop->flags & OBJ_PROP_LINK_CLASS)) { + g_free(prop); + } } =20 static void object_add_link_prop(Object *obj, const char *name, @@ -1894,6 +1899,45 @@ void object_property_add_link(Object *obj, const cha= r *name, object_add_link_prop(obj, name, type, targetp, check, flags, errp); } =20 +ObjectProperty * +object_class_property_add_link(ObjectClass *oc, + const char *name, + const char *type, ptrdiff_t offset, + void (*check)(const Object *obj, const char *name, + Object *val, Error **errp), + ObjectPropertyLinkFlags flags, + Error **errp) +{ + Error *local_err =3D NULL; + LinkProperty *prop =3D g_new0(LinkProperty, 1); + gchar *full_type; + ObjectProperty *op; + + prop->offset =3D offset; + prop->check =3D check; + prop->flags =3D flags | OBJ_PROP_LINK_CLASS; + + full_type =3D g_strdup_printf("link<%s>", type); + + op =3D object_class_property_add(oc, name, full_type, + object_get_link_property, + check ? object_set_link_property : NULL, + object_release_link_property, + prop, + &local_err); + if (local_err) { + error_propagate(errp, local_err); + g_free(prop); + goto out; + } + + op->resolve =3D object_resolve_link_property; + +out: + g_free(full_type); + return op; +} + void object_property_add_const_link(Object *obj, const char *name, Object *target, Error **errp) { --=20 1.8.3.1