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Mon, 28 Jun 2021 12:12:05 +0000 From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, mreitz@redhat.com, kwolf@redhat.com, vsementsov@virtuozzo.com, jsnow@redhat.com, eesposit@redhat.com, pbonzini@redhat.com, eblake@redhat.com, stefanha@redhat.com Subject: [PATCH v2 1/2] introduce QEMU_AUTO_VFREE Date: Mon, 28 Jun 2021 15:11:32 +0300 Message-Id: <20210628121133.193984-2-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210628121133.193984-1-vsementsov@virtuozzo.com> References: <20210628121133.193984-1-vsementsov@virtuozzo.com> X-Originating-IP: [185.215.60.221] X-ClientProxiedBy: HE1P190CA0036.EURP190.PROD.OUTLOOK.COM (2603:10a6:7:52::25) To AM7PR08MB5494.eurprd08.prod.outlook.com (2603:10a6:20b:dc::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (185.215.60.221) by HE1P190CA0036.EURP190.PROD.OUTLOOK.COM (2603:10a6:7:52::25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4264.18 via Frontend Transport; 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envelope-from=vsementsov@virtuozzo.com; helo=EUR02-HE1-obe.outbound.protection.outlook.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Introduce a convenient macro, that works for qemu_memalign() like g_autofree works with g_malloc. Signed-off-by: Vladimir Sementsov-Ogievskiy --- include/qemu/osdep.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h index 0a54bf7be8..e3a62cce89 100644 --- a/include/qemu/osdep.h +++ b/include/qemu/osdep.h @@ -370,6 +370,21 @@ void *qemu_anon_ram_alloc(size_t size, uint64_t *align, bool shared, void qemu_vfree(void *ptr); void qemu_anon_ram_free(void *ptr, size_t size); +/* + * It's an analog of GLIB's g_autoptr_cleanup_generic_gfree(), used to define + * g_autofree macro. + */ +static inline void qemu_cleanup_generic_vfree(void *p) +{ + void **pp = (void **)p; + qemu_vfree(*pp); +} + +/* + * Analog of g_autofree, but qemu_vfree is called on cleanup instead of g_free. + */ +#define QEMU_AUTO_VFREE __attribute__((cleanup(qemu_cleanup_generic_vfree))) + /* * Abstraction of PROT_ and MAP_ flags as passed to mmap(), for example, * consumed by qemu_ram_mmap().