From patchwork Wed Mar 10 16:51:03 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anthony Liguori X-Patchwork-Id: 47256 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id C3176B7CC2 for ; Thu, 11 Mar 2010 03:53:09 +1100 (EST) Received: from localhost ([127.0.0.1]:37011 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NpP9N-0004kI-9m for incoming@patchwork.ozlabs.org; Wed, 10 Mar 2010 11:52:49 -0500 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NpP82-0004ii-NT for qemu-devel@nongnu.org; Wed, 10 Mar 2010 11:51:26 -0500 Received: from [199.232.76.173] (port=58944 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NpP80-0004hF-VZ for qemu-devel@nongnu.org; Wed, 10 Mar 2010 11:51:25 -0500 Received: from Debian-exim by monty-python.gnu.org with spam-scanned (Exim 4.60) (envelope-from ) id 1NpP7z-0001XA-Ce for qemu-devel@nongnu.org; Wed, 10 Mar 2010 11:51:24 -0500 Received: from e35.co.us.ibm.com ([32.97.110.153]:46181) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1NpP7z-0001WU-01 for qemu-devel@nongnu.org; Wed, 10 Mar 2010 11:51:23 -0500 Received: from d03relay05.boulder.ibm.com (d03relay05.boulder.ibm.com [9.17.195.107]) by e35.co.us.ibm.com (8.14.3/8.13.1) with ESMTP id o2AGl8Sa021446 for ; Wed, 10 Mar 2010 09:47:08 -0700 Received: from d03av06.boulder.ibm.com (d03av06.boulder.ibm.com [9.17.195.245]) by d03relay05.boulder.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o2AGpCOx082130 for ; Wed, 10 Mar 2010 09:51:14 -0700 Received: from d03av06.boulder.ibm.com (loopback [127.0.0.1]) by d03av06.boulder.ibm.com (8.14.3/8.13.1/NCO v10.0 AVout) with ESMTP id o2AGrbDI004808 for ; Wed, 10 Mar 2010 09:53:38 -0700 Received: from localhost.localdomain (dyn95341159.austin.ibm.com [9.53.41.159]) by d03av06.boulder.ibm.com (8.14.3/8.13.1/NCO v10.0 AVin) with ESMTP id o2AGrbGv004788; Wed, 10 Mar 2010 09:53:37 -0700 From: Anthony Liguori To: qemu-devel@nongnu.org Date: Wed, 10 Mar 2010 10:51:03 -0600 Message-Id: <1268239869-16058-1-git-send-email-aliguori@us.ibm.com> X-Mailer: git-send-email 1.6.5.2 X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) Cc: Anthony Liguori , Gerd Hoffman , Luiz Capitulino Subject: [Qemu-devel] [PATCH 1/7] Add support for generic notifier lists X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Notifiers are data-less callbacks and a notifier list is a list of registered notifiers that all are interested in a particular event. We'll use this in a few patches to implement mouse change notification. Signed-off-by: Anthony Liguori --- Makefile.objs | 1 + notify.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++ notify.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 103 insertions(+), 0 deletions(-) create mode 100644 notify.c create mode 100644 notify.h diff --git a/Makefile.objs b/Makefile.objs index e791dd5..dcb5a92 100644 --- a/Makefile.objs +++ b/Makefile.objs @@ -104,6 +104,7 @@ common-obj-$(CONFIG_VNC_TLS) += vnc-tls.o vnc-auth-vencrypt.o common-obj-$(CONFIG_VNC_SASL) += vnc-auth-sasl.o common-obj-$(CONFIG_COCOA) += cocoa.o common-obj-$(CONFIG_IOTHREAD) += qemu-thread.o +common-obj-y += notify.o slirp-obj-y = cksum.o if.o ip_icmp.o ip_input.o ip_output.o slirp-obj-y += slirp.o mbuf.o misc.o sbuf.o socket.o tcp_input.o tcp_output.o diff --git a/notify.c b/notify.c new file mode 100644 index 0000000..cbb4796 --- /dev/null +++ b/notify.c @@ -0,0 +1,53 @@ +/* + * Notifier lists + * + * Copyright IBM, Corp. 2010 + * + * Authors: + * Anthony Liguori + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + * + */ + +#include "qemu-common.h" +#include "notify.h" + +void qemu_notifier_list_init(QEMUNotifierList *list) +{ + QTAILQ_INIT(&list->notifiers); +} + +void qemu_notifier_list_add(QEMUNotifierList *list, QEMUNotifier *notifier) +{ + QEMUNotifierNode *node = qemu_mallocz(sizeof(*node)); + + node->notifier = notifier; + QTAILQ_INSERT_HEAD(&list->notifiers, node, node); +} + +void qemu_notifier_list_remove(QEMUNotifierList *list, QEMUNotifier *notifier) +{ + QEMUNotifierNode *node; + + QTAILQ_FOREACH(node, &list->notifiers, node) { + if (node->notifier == notifier) { + break; + } + } + + if (node) { + QTAILQ_REMOVE(&list->notifiers, node, node); + qemu_free(node); + } +} + +void qemu_notifier_list_notify(QEMUNotifierList *list) +{ + QEMUNotifierNode *node, *node_next; + + QTAILQ_FOREACH_SAFE(node, &list->notifiers, node, node_next) { + node->notifier->notify(node->notifier); + } +} diff --git a/notify.h b/notify.h new file mode 100644 index 0000000..075d302 --- /dev/null +++ b/notify.h @@ -0,0 +1,49 @@ +/* + * Notifier lists + * + * Copyright IBM, Corp. 2010 + * + * Authors: + * Anthony Liguori + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + * + */ + +#ifndef QEMU_NOTIFY_H +#define QEMU_NOTIFY_H + +#include "qemu-queue.h" + +typedef struct QEMUNotifier QEMUNotifier; +typedef struct QEMUNotifierNode QEMUNotifierNode; + +struct QEMUNotifier +{ + void (*notify)(QEMUNotifier *notifier); +}; + +struct QEMUNotifierNode +{ + QEMUNotifier *notifier; + QTAILQ_ENTRY(QEMUNotifierNode) node; +}; + +typedef struct QEMUNotifierList +{ + QTAILQ_HEAD(, QEMUNotifierNode) notifiers; +} QEMUNotifierList; + +#define QEMU_NOTIFIER_LIST_INITIALIZER(head) \ + { QTAILQ_HEAD_INITIALIZER((head).notifiers) } + +void qemu_notifier_list_init(QEMUNotifierList *list); + +void qemu_notifier_list_add(QEMUNotifierList *list, QEMUNotifier *notifier); + +void qemu_notifier_list_remove(QEMUNotifierList *list, QEMUNotifier *notifier); + +void qemu_notifier_list_notify(QEMUNotifierList *list); + +#endif