From 0d7f9a389e2f0826a8cf01aae58e367539662d1c Mon Sep 17 00:00:00 2001
From: Pekka Enberg <penberg@kernel.org>
Date: Wed, 10 Aug 2011 21:48:11 +0300
Subject: [PATCH] kvm tools: Stop guest if SDL window is closed

Send SIGKVMSTOP signal to the process if the SDL window is closed. This fixes
an annoying problem where closing the window makes the guest seem like it froze
although it's really running in the background but the UI is unusable.

Cc: Asias He <asias.hejun@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Prasad Joshi <prasadjoshi124@gmail.com>
Cc: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
---
 tools/kvm/ui/sdl.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/kvm/ui/sdl.c b/tools/kvm/ui/sdl.c
index aa3eff910267..088cd29b44ec 100644
--- a/tools/kvm/ui/sdl.c
+++ b/tools/kvm/ui/sdl.c
@@ -3,9 +3,11 @@
 #include "kvm/framebuffer.h"
 #include "kvm/i8042.h"
 #include "kvm/util.h"
+#include "kvm/kvm.h"
 
 #include <SDL/SDL.h>
 #include <pthread.h>
+#include <signal.h>
 
 #define FRAME_RATE		25
 
@@ -127,6 +129,8 @@ static void *sdl__thread(void *p)
 		SDL_Delay(1000 / FRAME_RATE);
 	}
 exit:
+	kill(0, SIGKVMSTOP);
+
 	return NULL;
 }
 
-- 
2.39.5