From a0ecfb73b196147215a621236bc7ad8f500b95ea Mon Sep 17 00:00:00 2001
From: balrog <balrog@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Sun, 13 Jan 2008 23:51:53 +0000
Subject: [PATCH] Reduce redundant timer ticks in VNC, by Anders Melchiorsen.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3904 c046a42c-6fe2-441c-8c8c-71466251a162
---
 vnc.c | 22 ++++++++--------------
 1 file changed, 8 insertions(+), 14 deletions(-)

diff --git a/vnc.c b/vnc.c
index 9fb8c85a1a..b5921a3122 100644
--- a/vnc.c
+++ b/vnc.c
@@ -506,6 +506,8 @@ static void vnc_update_client(void *opaque)
 	int saved_offset;
 	int has_dirty = 0;
 
+        vga_hw_update();
+
         vnc_set_bits(width_mask, (vs->width / 16), VNC_DIRTY_WORDS);
 
 	/* Walk through the dirty map and eliminate tiles that
@@ -580,22 +582,11 @@ static void vnc_update_client(void *opaque)
 	vnc_flush(vs);
 
     }
-    qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL);
-}
 
-static void vnc_timer_init(VncState *vs)
-{
-    if (vs->timer == NULL) {
-	vs->timer = qemu_new_timer(rt_clock, vnc_update_client, vs);
-	qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock));
+    if (vs->csock != -1) {
+        qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL);
     }
-}
 
-static void vnc_dpy_refresh(DisplayState *ds)
-{
-    VncState *vs = ds->opaque;
-    vnc_timer_init(vs);
-    vga_hw_update();
 }
 
 static int vnc_listen_poll(void *opaque)
@@ -1926,6 +1917,7 @@ static void vnc_listen_read(void *opaque)
 	vs->has_resize = 0;
 	vs->has_hextile = 0;
 	vs->ds->dpy_copy = NULL;
+        vnc_update_client(vs);
     }
 }
 
@@ -1959,10 +1951,12 @@ void vnc_display_init(DisplayState *ds)
     if (!vs->kbd_layout)
 	exit(1);
 
+    vs->timer = qemu_new_timer(rt_clock, vnc_update_client, vs);
+
     vs->ds->data = NULL;
     vs->ds->dpy_update = vnc_dpy_update;
     vs->ds->dpy_resize = vnc_dpy_resize;
-    vs->ds->dpy_refresh = vnc_dpy_refresh;
+    vs->ds->dpy_refresh = NULL;
 
     memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));