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[Qemu-devel] [PATCH 1/7] Add support for generic notifier lists (v2)
From: |
Anthony Liguori |
Subject: |
[Qemu-devel] [PATCH 1/7] Add support for generic notifier lists (v2) |
Date: |
Mon, 15 Mar 2010 15:34:22 -0500 |
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 <address@hidden>
---
v1 -> v2
- Do not do memory allocations by placing list nodes in notifier
---
Makefile.objs | 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.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..bcd3fc5
--- /dev/null
+++ b/notify.c
@@ -0,0 +1,39 @@
+/*
+ * Notifier lists
+ *
+ * Copyright IBM, Corp. 2010
+ *
+ * Authors:
+ * Anthony Liguori <address@hidden>
+ *
+ * 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 <address@hidden>
+ *
+ * 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
--
1.6.5.2
- [Qemu-devel] [PATCH 1/7] Add support for generic notifier lists (v2),
Anthony Liguori <=
- [Qemu-devel] [PATCH 3/7] Add kbd_mouse_has_absolute(), Anthony Liguori, 2010/03/15
- [Qemu-devel] [PATCH 2/7] Rewrite mouse handlers to use QTAILQ and to have an activation function, Anthony Liguori, 2010/03/15
- [Qemu-devel] [PATCH 7/7] sdl: use mouse mode notifier, Anthony Liguori, 2010/03/15
- [Qemu-devel] [PATCH 6/7] input: make vnc use mouse mode notifiers, Anthony Liguori, 2010/03/15
- [Qemu-devel] [PATCH 4/7] Add notifier for mouse mode changes, Anthony Liguori, 2010/03/15
- [Qemu-devel] [PATCH 5/7] Expose whether a mouse is an absolute device via QMP and the human monitor., Anthony Liguori, 2010/03/15
- [Qemu-devel] Re: [PATCH 1/7] Add support for generic notifier lists (v2), Avi Kivity, 2010/03/16
- [Qemu-devel] Re: [PATCH 1/7] Add support for generic notifier lists (v2), Juan Quintela, 2010/03/16