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[176.184.5.64]) by smtp.gmail.com with ESMTPSA id p21-20020a05600c431500b00403b63e87f2sm176451wme.32.2023.11.22.10.30.55 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 22 Nov 2023 10:30:55 -0800 (PST) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Paolo Bonzini , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , Richard Henderson , Eduardo Habkost , Peter Maydell , Thomas Huth , Mark Cave-Ayland , =?utf-8?q?Daniel_P=2E_Ber?= =?utf-8?q?rang=C3=A9?= , qemu-arm@nongnu.org, =?utf-8?q?Alex_Benn=C3=A9e?= Subject: [RFC PATCH-for-9.0 01/11] qom: Introduce the TypeInfo::can_register() handler Date: Wed, 22 Nov 2023 19:30:37 +0100 Message-ID: <20231122183048.17150-2-philmd@linaro.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231122183048.17150-1-philmd@linaro.org> References: <20231122183048.17150-1-philmd@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::32a; envelope-from=philmd@linaro.org; helo=mail-wm1-x32a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org Add a helper to decide at runtime whether a type can be registered to the QOM framework or not. Signed-off-by: Philippe Mathieu-Daudé --- include/qom/object.h | 4 ++++ qom/object.c | 3 +++ 2 files changed, 7 insertions(+) diff --git a/include/qom/object.h b/include/qom/object.h index afccd24ca7..0d42fe17de 100644 --- a/include/qom/object.h +++ b/include/qom/object.h @@ -372,6 +372,8 @@ struct Object * struct TypeInfo: * @name: The name of the type. * @parent: The name of the parent type. + * @can_register: This optional function is called before a type is registered. + * If it exists and returns false, the type is not registered. * @instance_size: The size of the object (derivative of #Object). If * @instance_size is 0, then the size of the object will be the size of the * parent object. @@ -414,6 +416,8 @@ struct TypeInfo const char *name; const char *parent; + bool (*can_register)(void); + size_t instance_size; size_t instance_align; void (*instance_init)(Object *obj); diff --git a/qom/object.c b/qom/object.c index 95c0dc8285..f09b6b5a92 100644 --- a/qom/object.c +++ b/qom/object.c @@ -150,6 +150,9 @@ static TypeImpl *type_register_internal(const TypeInfo *info) TypeImpl *type_register(const TypeInfo *info) { assert(info->parent); + if (info->can_register && !info->can_register()) { + return NULL; + } return type_register_internal(info); }