From 55b8d7456155de4e5d44136a140a599e2a2a755b Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Fri, 28 Aug 2015 16:10:46 +0000
Subject: Revert previous; we do need a timer, until I have a better idea. We
 can't do the name check every loop, because that is too expensive, and we
 can't make sure it only happens infrequently because we have no idea when the
 next change will happen.

---
 cmd-set-option.c |  4 +++-
 names.c          | 32 +++++++++++++++++++++++++-------
 server-window.c  |  1 -
 tmux.h           |  3 ++-
 window.c         |  5 +++++
 5 files changed, 35 insertions(+), 10 deletions(-)

diff --git a/cmd-set-option.c b/cmd-set-option.c
index 631a4d0e..56ca91e0 100644
--- a/cmd-set-option.c
+++ b/cmd-set-option.c
@@ -180,7 +180,9 @@ cmd_set_option_exec(struct cmd *self, struct cmd_q *cmdq)
 	if (strcmp(oe->name, "automatic-rename") == 0) {
 		RB_FOREACH(w, windows, &windows) {
 			if (options_get_number(&w->options, "automatic-rename"))
-				w->active->flags |= PANE_CHANGED;
+				queue_window_name(w);
+			else if (event_initialized(&w->name_timer))
+				evtimer_del(&w->name_timer);
 		}
 	}
 	if (strcmp(oe->name, "status") == 0 ||
diff --git a/names.c b/names.c
index 00bc88a2..aa0673ea 100644
--- a/names.c
+++ b/names.c
@@ -25,16 +25,37 @@
 
 #include "tmux.h"
 
+void	 window_name_callback(unused int, unused short, void *);
+
+void
+queue_window_name(struct window *w)
+{
+	struct timeval	tv;
+
+	tv.tv_sec = 0;
+	tv.tv_usec = NAME_INTERVAL * 1000L;
+
+	if (event_initialized(&w->name_timer))
+		evtimer_del(&w->name_timer);
+	evtimer_set(&w->name_timer, window_name_callback, w);
+	evtimer_add(&w->name_timer, &tv);
+}
+
 void
-check_window_name(struct window *w)
+window_name_callback(unused int fd, unused short events, void *data)
 {
-	char	*name;
+	struct window	*w = data;
+	char		*name;
 
 	if (w->active == NULL)
 		return;
 
-	if (!options_get_number(&w->options, "automatic-rename"))
+	if (!options_get_number(&w->options, "automatic-rename")) {
+		if (event_initialized(&w->name_timer))
+			event_del(&w->name_timer);
 		return;
+	}
+	queue_window_name(w);
 
 	if (~w->active->flags & PANE_CHANGED)
 		return;
@@ -42,12 +63,9 @@ check_window_name(struct window *w)
 
 	name = format_window_name(w);
 	if (strcmp(name, w->name) != 0) {
-		log_debug("@%u new name %s (was %s)", w->id, name, w->name);
 		window_set_name(w, name);
 		server_status_window(w);
-	} else
-		log_debug("@%u name not changed (still %s)", w->id, w->name);
-
+	}
 	free(name);
 }
 
diff --git a/server-window.c b/server-window.c
index be1dde2a..c96c2602 100644
--- a/server-window.c
+++ b/server-window.c
@@ -49,7 +49,6 @@ server_window_loop(void)
 					server_status_session(s);
 			}
 		}
-		check_window_name(w);
 	}
 }
 
diff --git a/tmux.h b/tmux.h
index 395d3292..6ac0b578 100644
--- a/tmux.h
+++ b/tmux.h
@@ -870,6 +870,7 @@ RB_HEAD(window_pane_tree, window_pane);
 struct window {
 	u_int		 id;
 	char		*name;
+	struct event	 name_timer;
 	struct timeval	 silence_timer;
 	struct timeval	 activity_time;
 
@@ -2208,7 +2209,7 @@ void	window_choose_collapse_all(struct window_pane *);
 void	window_choose_set_current(struct window_pane *, u_int);
 
 /* names.c */
-void	 check_window_name(struct window *);
+void	 queue_window_name(struct window *);
 char	*default_window_name(struct window *);
 char	*format_window_name(struct window *);
 char	*parse_window_name(const char *);
diff --git a/window.c b/window.c
index bfd13b1c..77c7a633 100644
--- a/window.c
+++ b/window.c
@@ -299,6 +299,8 @@ window_create1(u_int sx, u_int sy)
 		fatal("gettimeofday failed");
 
 	options_init(&w->options, &global_w_options);
+	if (options_get_number(&w->options, "automatic-rename"))
+		queue_window_name(w);
 
 	w->references = 0;
 
@@ -347,6 +349,9 @@ window_destroy(struct window *w)
 		layout_free_cell(w->saved_layout_root);
 	free(w->old_layout);
 
+	if (event_initialized(&w->name_timer))
+		evtimer_del(&w->name_timer);
+
 	options_free(&w->options);
 
 	window_destroy_panes(w);
-- 
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