From f0000349e7ccc2f5393150e6c615043aa6846f9a Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Fri, 14 Nov 2003 08:29:37 +0000
Subject: Eliminate all delays in updates; let the X server scheduling handle
 things.

---
 ChangeLog  |  6 ++++++
 xcompmgr.c | 14 +++++++++++++-
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index dc254bc..c29412a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2003-11-14  Keith Packard  <keithp@keithp.com>
+
+	* xcompmgr.c: (main):
+	Eliminate all delays in updates; let the X server scheduling
+	handle things.
+
 2003-11-13  Keith Packard  <keithp@keithp.com>
 
 	* xcompmgr.c:
diff --git a/xcompmgr.c b/xcompmgr.c
index 20cc534..f8b1f25 100644
--- a/xcompmgr.c
+++ b/xcompmgr.c
@@ -768,7 +768,7 @@ time_in_millis ()
     return(tp.tv_sec * 1000) + (tp.tv_usec / 1000);
 }
 
-#define INTERVAL    10
+#define INTERVAL    0
 
 main ()
 {
@@ -792,7 +792,9 @@ main ()
     int		    n;
     int		    last_update;
     int		    now;
+#if INTERVAL
     int		    timeout;
+#endif
 
     dpy = XOpenDisplay (0);
     if (!dpy)
@@ -863,15 +865,21 @@ main ()
     XFree (children);
     XUngrabServer (dpy);
     paint_all (dpy, None);
+#if INTERVAL
     last_update = time_in_millis ();
+#endif
     for (;;)
     {
+#if INTERVAL
 	int busy_start = 0;
+#endif
 /*	dump_wins (); */
 	do {
 	    XNextEvent (dpy, &ev);
+#if INTERVAL
 	    if (!busy_start)
 		busy_start = time_in_millis();
+#endif
 /*	    printf ("event %d\n", ev.type); */
 	    switch (ev.type) {
 	    case CreateNotify:
@@ -943,6 +951,7 @@ main ()
 		break;
 	    }
 	} while (XEventsQueued (dpy, QueuedAfterReading));
+#if INTERVAL
 	now = time_in_millis ();
 /*	printf ("\t\tbusy %d\n", now - busy_start); */
 	timeout = INTERVAL - (now - last_update);
@@ -954,11 +963,14 @@ main ()
 	    if (n > 0 && (ufd.revents & POLLIN) && XEventsQueued (dpy, QueuedAfterReading))
 		continue;
 	}
+#endif
 	if (allDamage)
 	{
+#if INTERVAL
 	    int	old_update = last_update;
 	    last_update = time_in_millis();
 /*	    printf ("delta %d\n", last_update - old_update); */
+#endif
 	    paint_all (dpy, allDamage);
 	    allDamage = None;
 	}
-- 
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