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Wed, 23 Oct 2019 15:26:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1571844411; 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=v5LhvtZSfFq0VX5A7OuDSQtwwsHYnVMcy/wI7iSilQc=; b=NhFLODuWfKE/wCsgupk+uRrCWauDpTZ0FLghGEfBD0hiSVBwvcCs52udny7B2Ept1kU7Q9 aawhQfcGY4R2VzecKPxkE4vAb49+QeiBAQz8uxtUl6poya+DyVOqGsy4cFYAzQTPVMpbgk dSXBIKfZDIZSvsch9PS5M6nZ8USZePQ= From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PATCH 1/3] coroutine: Add qemu_co_mutex_assert_locked() Date: Wed, 23 Oct 2019 17:26:18 +0200 Message-Id: <20191023152620.13166-2-kwolf@redhat.com> In-Reply-To: <20191023152620.13166-1-kwolf@redhat.com> References: <20191023152620.13166-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-MC-Unique: T5EIT1y5NdaTF3P0VLOOoA-1 X-Mimecast-Spam-Score: 0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] 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: kwolf@redhat.com, psyhomb@gmail.com, michael@weiser.dinsnail.net, vsementsov@virtuozzo.com, den@virtuozzo.com, qemu-devel@nongnu.org, qemu-stable@nongnu.org, dgilbert@redhat.com, mreitz@redhat.com, lersek@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Some functions require that the caller holds a certain CoMutex for them to operate correctly. Add a function so that they can assert the lock is really held. Cc: qemu-stable@nongnu.org Signed-off-by: Kevin Wolf --- include/qemu/coroutine.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/qemu/coroutine.h b/include/qemu/coroutine.h index 9801e7f5a4..a36bcfe5c8 100644 --- a/include/qemu/coroutine.h +++ b/include/qemu/coroutine.h @@ -167,6 +167,13 @@ void coroutine_fn qemu_co_mutex_lock(CoMutex *mutex); */ void coroutine_fn qemu_co_mutex_unlock(CoMutex *mutex); =20 +/** + * Assert that the current coroutine holds @mutex. + */ +static inline coroutine_fn void qemu_co_mutex_assert_locked(CoMutex *mutex) +{ + assert(mutex->locked && mutex->holder =3D=3D qemu_coroutine_self()); +} =20 /** * CoQueues are a mechanism to queue coroutines in order to continue execu= ting --=20 2.20.1