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Thu, 17 Oct 2019 06:16:24 -0700 (PDT) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Subject: [PATCH v6 09/54] queue: add QTAILQ_REMOVE_SEVERAL Date: Thu, 17 Oct 2019 14:15:30 +0100 Message-Id: <20191017131615.19660-10-alex.bennee@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191017131615.19660-1-alex.bennee@linaro.org> References: <20191017131615.19660-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::433 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: robert.foley@futurewei.com, Richard Henderson , peter.puhov@futurewei.com, aaron@os.amperecomputing.com, cota@braap.org, =?UTF-8?q?Alex=20Benn=C3=A9e?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) From: "Emilio G. Cota" This is faster than removing elements one by one. Will gain a user soon. Signed-off-by: Emilio G. Cota Signed-off-by: Alex Benn=C3=A9e Reviewed-by: Richard Henderson --- include/qemu/queue.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/qemu/queue.h b/include/qemu/queue.h index 73bf4a984d..4764d93ea3 100644 --- a/include/qemu/queue.h +++ b/include/qemu/queue.h @@ -420,6 +420,16 @@ union { = \ (elm)->field.tqe_circ.tql_prev =3D NULL; \ } while (/*CONSTCOND*/0) =20 +/* remove @left, @right and all elements in between from @head */ +#define QTAILQ_REMOVE_SEVERAL(head, left, right, field) do { \ + if (((right)->field.tqe_next) !=3D NULL) \ + (right)->field.tqe_next->field.tqe_circ.tql_prev =3D \ + (left)->field.tqe_circ.tql_prev; \ + else \ + (head)->tqh_circ.tql_prev =3D (left)->field.tqe_circ.tql_prev;= \ + (left)->field.tqe_circ.tql_prev->tql_next =3D (right)->field.tqe_n= ext; \ + } while (/*CONSTCOND*/0) + #define QTAILQ_FOREACH(var, head, field) \ for ((var) =3D ((head)->tqh_first); \ (var); \ --=20 2.20.1