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[Qemu-devel] [PATCH v3 11/15] console: ignore ui_info updates which don'


From: Stefan Hajnoczi
Subject: [Qemu-devel] [PATCH v3 11/15] console: ignore ui_info updates which don't actually update something
Date: Mon, 13 Jun 2016 18:05:31 +0100

From: Gerd Hoffmann <address@hidden>

Signed-off-by: Gerd Hoffmann <address@hidden>
Message-id: address@hidden
---
 ui/console.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/ui/console.c b/ui/console.c
index bf38579..ce1e105 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -1453,16 +1453,21 @@ bool dpy_ui_info_supported(QemuConsole *con)
 int dpy_set_ui_info(QemuConsole *con, QemuUIInfo *info)
 {
     assert(con != NULL);
-    con->ui_info = *info;
+
     if (!dpy_ui_info_supported(con)) {
         return -1;
     }
+    if (memcmp(&con->ui_info, info, sizeof(con->ui_info)) == 0) {
+        /* nothing changed -- ignore */
+        return 0;
+    }
 
     /*
      * Typically we get a flood of these as the user resizes the window.
      * Wait until the dust has settled (one second without updates), then
      * go notify the guest.
      */
+    con->ui_info = *info;
     timer_mod(con->ui_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000);
     return 0;
 }
-- 
2.5.5




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