Sync OpenBSD patchset 1153:

Add a queue of notifys and a way to turn them off and on (we do not want
notifys to happen during some commands). Based on code from George
Nachman.

3 files changed, 146 insertions, 11 deletions

diff --git a/cmd-list.c b/cmd-list.c
index 0557000e..1717ec3b 100644
--- a/cmd-list.c
+++ b/cmd-list.c
@@ -91,6 +91,8 @@ cmd_list_exec(struct cmd_list *cmdlist, struct cmd_ctx *ctx)
 	if (c != NULL && c->session != NULL)
 		guards = c->flags & CLIENT_CONTROL;
 
+	notify_disable();
+
 	retval = 0;
 	TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
 		if (guards)
@@ -128,6 +130,8 @@ cmd_list_exec(struct cmd_list *cmdlist, struct cmd_ctx *ctx)
 			break;
 		}
 	}
+
+	notify_enable();
 	return (retval);
 }
 
diff --git a/notify.c b/notify.c
index ddce6d76..7d7491b6 100644
--- a/notify.c
+++ b/notify.c
@@ -16,44 +16,173 @@
  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include <sys/types.h>
+#include <sys/queue.h>
+
+#include <stdlib.h>
+
 #include "tmux.h"
 
+enum notify_type {
+	NOTIFY_WINDOW_LAYOUT_CHANGED,
+	NOTIFY_WINDOW_UNLINKED,
+	NOTIFY_WINDOW_LINKED,
+	NOTIFY_WINDOW_RENAMED,
+	NOTIFY_ATTACHED_SESSION_CHANGED,
+	NOTIFY_SESSION_RENAMED,
+	NOTIFY_SESSION_CREATED,
+	NOTIFY_SESSION_CLOSED
+};
+
+struct notify_entry {
+	enum notify_type	 type;
+
+	struct client		*client;
+	struct session		*session;
+	struct window		*window;
+
+	TAILQ_ENTRY(notify_entry) entry;
+};
+TAILQ_HEAD(, notify_entry) notify_queue = TAILQ_HEAD_INITIALIZER(notify_queue);
+int	notify_enabled = 1;
+
+void	notify_drain(void);
+void	notify_add(enum notify_type, struct client *, struct session *,
+	    struct window *);
+
+void
+notify_enable(void)
+{
+	notify_enabled = 1;
+	notify_drain();
+}
+
+void
+notify_disable(void)
+{
+	notify_enabled = 0;
+}
+
+void
+notify_add(enum notify_type type, struct client *c, struct session *s,
+    struct window *w)
+{
+	struct notify_entry	*ne;
+
+	ne = xcalloc(1, sizeof *ne);
+	ne->type = type;
+	ne->client = c;
+	ne->session = s;
+	ne->window = w;
+	TAILQ_INSERT_TAIL(&notify_queue, ne, entry);
+
+	if (c != NULL)
+		c->references++;
+	if (s != NULL)
+		s->references++;
+	if (w != NULL)
+		w->references++;
+}
+
+void
+notify_drain(void)
+{
+	struct notify_entry	*ne, *ne1;
+
+	if (!notify_enabled)
+		return;
+
+	TAILQ_FOREACH_SAFE(ne, &notify_queue, entry, ne1) {
+		switch (ne->type) {
+		case NOTIFY_WINDOW_LAYOUT_CHANGED:
+			/* control_notify_window_layout_changed(ne->window); */
+			break;
+		case NOTIFY_WINDOW_UNLINKED:
+			/* control_notify_window_unlinked(ne->session, ne->window); */
+			break;
+		case NOTIFY_WINDOW_LINKED:
+			/* control_notify_window_linked(ne->session, ne->window); */
+			break;
+		case NOTIFY_WINDOW_RENAMED:
+			/* control_notify_window_renamed(ne->window); */
+			break;
+		case NOTIFY_ATTACHED_SESSION_CHANGED:
+			/* control_notify_attached_session_changed(ne->client, ne->session); */
+			break;
+		case NOTIFY_SESSION_RENAMED:
+			/* control_notify_session_renamed(ne->session); */
+			break;
+		case NOTIFY_SESSION_CREATED:
+			/* control_notify_session_created(ne->session); */
+			break;
+		case NOTIFY_SESSION_CLOSED:
+			/* control_notify_session_close(ne->session); */
+			break;
+		}
+
+		if (ne->client != NULL)
+			ne->client->references--;
+		if (ne->session != NULL)
+			ne->session->references--;
+		if (ne->window != NULL)
+			ne->window->references--;
+		TAILQ_REMOVE(&notify_queue, ne, entry);
+		free(ne);
+	}
+}
+
 void
-notify_window_layout_changed(unused struct window *w)
+notify_window_layout_changed(struct window *w)
 {
+	notify_add(NOTIFY_WINDOW_LAYOUT_CHANGED, NULL, NULL, w);
+	notify_drain();
 }
 
 void
-notify_window_unlinked(unused struct session *s, unused struct window *w)
+notify_window_unlinked(struct session *s, struct window *w)
 {
+	notify_add(NOTIFY_WINDOW_UNLINKED, NULL, s, w);
+	notify_drain();
 }
 
 void
-notify_window_linked(unused struct session *s, unused struct window *w)
+notify_window_linked(struct session *s, struct window *w)
 {
+	notify_add(NOTIFY_WINDOW_LINKED, NULL, s, w);
+	notify_drain();
 }
 
 void
-notify_window_renamed(unused struct window *w)
+notify_window_renamed(struct window *w)
 {
+	notify_add(NOTIFY_WINDOW_RENAMED, NULL, NULL, w);
+	notify_drain();
 }
 
 void
-notify_attached_session_changed(unused struct client *c)
+notify_attached_session_changed(struct client *c)
 {
+	notify_add(NOTIFY_ATTACHED_SESSION_CHANGED, c, NULL, NULL);
+	notify_drain();
 }
 
 void
-notify_session_renamed(unused struct session *s)
+notify_session_renamed(struct session *s)
 {
+	notify_add(NOTIFY_SESSION_RENAMED, NULL, s, NULL);
+	notify_drain();
 }
 
 void
-notify_session_created(unused struct session *s)
+notify_session_created(struct session *s)
 {
+	notify_add(NOTIFY_SESSION_CREATED, NULL, s, NULL);
+	notify_drain();
 }
 
 void
-notify_session_closed(unused struct session *s)
+notify_session_closed(struct session *s)
 {
+	notify_add(NOTIFY_SESSION_CLOSED, NULL, s, NULL);
+	notify_drain();
 }
diff --git a/tmux.h b/tmux.h
index 49f053f3..223d5e94 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1480,6 +1480,8 @@ void	mode_key_init(struct mode_key_data *, struct mode_key_tree *);
 enum mode_key_cmd mode_key_lookup(struct mode_key_data *, int);
 
 /* notify.c */
+void	notify_enable(void);
+void	notify_disable(void);
 void	notify_window_layout_changed(struct window *);
 void	notify_window_unlinked(struct session *, struct window *);
 void	notify_window_linked(struct session *, struct window *);
@@ -2158,11 +2160,11 @@ void		 queue_window_name(struct window *);
 char		*default_window_name(struct window *);
 
 /* signal.c */
-void set_signals(void(*)(int, short, void *));
-void clear_signals(int);
+void	set_signals(void(*)(int, short, void *));
+void	clear_signals(int);
 
 /* control.c */
-void control_callback(struct client *, int, void*);
+void	control_callback(struct client *, int, void*);
 
 /* session.c */
 extern struct sessions sessions;