From d11b0e8fc23f9e3d2bfd0f77fc555962216d5188 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Wed, 5 Jan 2011 15:29:09 -0200 Subject: [PATCH 04/48] Add support for generic notifier lists RH-Author: Gerd Hoffmann Message-id: <1294241382-17988-6-git-send-email-kraxel@redhat.com> Patchwork-id: 15743 O-Subject: [RHEL-6 kvm PATCH 05/38] Add support for generic notifier lists Bugzilla: 642131 634153 615947 632458 631832 647865 RH-Acked-by: Uri Lublin RH-Acked-by: Alon Levy RH-Acked-by: Hans de Goede 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. upstream: d1e70c5e6d1472856c52969301247fe8c3c8389d Signed-off-by: Anthony Liguori Signed-off-by: Gerd Hoffmann --- Makefile | 1 + notify.c | 39 +++++++++++++++++++++++++++++++++++++++ notify.h | 43 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 83 insertions(+), 0 deletions(-) create mode 100644 notify.c create mode 100644 notify.h Signed-off-by: Luiz Capitulino --- Makefile | 1 + notify.c | 39 +++++++++++++++++++++++++++++++++++++++ notify.h | 43 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 83 insertions(+), 0 deletions(-) create mode 100644 notify.c create mode 100644 notify.h diff --git a/Makefile b/Makefile index cea7fcc..4e2905a 100644 --- a/Makefile +++ b/Makefile @@ -214,6 +214,7 @@ obj-$(CONFIG_VNC_TLS) += vnc-tls.o vnc-auth-vencrypt.o obj-$(CONFIG_VNC_SASL) += vnc-auth-sasl.o obj-$(CONFIG_COCOA) += cocoa.o obj-$(CONFIG_IOTHREAD) += qemu-thread.o +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..bcd3fc5 --- /dev/null +++ b/notify.c @@ -0,0 +1,39 @@ +/* + * 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 notifier_list_init(NotifierList *list) +{ + QTAILQ_INIT(&list->notifiers); +} + +void notifier_list_add(NotifierList *list, Notifier *notifier) +{ + QTAILQ_INSERT_HEAD(&list->notifiers, notifier, node); +} + +void notifier_list_remove(NotifierList *list, Notifier *notifier) +{ + QTAILQ_REMOVE(&list->notifiers, notifier, node); +} + +void notifier_list_notify(NotifierList *list) +{ + Notifier *notifier, *next; + + QTAILQ_FOREACH_SAFE(notifier, &list->notifiers, node, next) { + notifier->notify(notifier); + } +} diff --git a/notify.h b/notify.h new file mode 100644 index 0000000..b40522f --- /dev/null +++ b/notify.h @@ -0,0 +1,43 @@ +/* + * 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 Notifier Notifier; + +struct Notifier +{ + void (*notify)(Notifier *notifier); + QTAILQ_ENTRY(Notifier) node; +}; + +typedef struct NotifierList +{ + QTAILQ_HEAD(, Notifier) notifiers; +} NotifierList; + +#define NOTIFIER_LIST_INITIALIZER(head) \ + { QTAILQ_HEAD_INITIALIZER((head).notifiers) } + +void notifier_list_init(NotifierList *list); + +void notifier_list_add(NotifierList *list, Notifier *notifier); + +void notifier_list_remove(NotifierList *list, Notifier *notifier); + +void notifier_list_notify(NotifierList *list); + +#endif -- 1.7.4.rc1.16.gd2f15e