Fix unref of GSource objects to address performance degradation

gtk-vnc-0.4.2-source-unref.patch

@@ -0,0 +1,42 @@
+commit 968968c9cf705f5bc96764399ea17a27a454c1c5
+Author: Daniel P. Berrange <berrange@redhat.com>
+Date:   Tue Dec 14 12:41:01 2010 +0000
+
+    Fix leak of GSource objects which causes performance problems
+    
+    The GLib event loop scales poorly as the number of GSource objects
+    increases. A missing unref on the GSource objects used in the VNC
+    connection meant that many unused instances accumulated, slowing
+    down the event loop processing.
+    
+    * src/vncconnection.c: Unref all GSource objects
+
+diff --git a/src/vncconnection.c b/src/vncconnection.c
+index 165a5f1..51b8b8d 100644
+--- a/src/vncconnection.c
++++ b/src/vncconnection.c
+@@ -234,6 +234,7 @@ static GIOCondition g_io_wait(GSocket *sock, GIOCondition cond)
+ 	g_source_set_callback(src, (GSourceFunc)g_io_wait_helper, coroutine_self(), NULL);
+ 	g_source_attach(src, NULL);
+ 	ret = coroutine_yield(NULL);
++	g_source_unref(src);
+ 	return *ret;
+ }
+ 
+@@ -254,6 +255,7 @@ static GIOCondition g_io_wait_interruptable(struct wait_queue *wait,
+ 	id = g_source_attach(src, NULL);
+ 	wait->waiting = TRUE;
+ 	ret = coroutine_yield(NULL);
++	g_source_unref(src);
+ 	wait->waiting = FALSE;
+ 
+ 	if (ret == NULL) {
+@@ -334,6 +336,8 @@ static gboolean g_condition_wait(g_condition_wait_func func, gpointer data)
+ 	g_source_attach(src, NULL);
+ 	g_source_set_callback(src, g_condition_wait_helper, coroutine_self(), NULL);
+ 	coroutine_yield(NULL);
++	g_source_unref(src);
++
+ 	return TRUE;
+ }
+ 

gtk-vnc.spec

@@ -18,7 +18,7 @@
 Summary: A GTK2 widget for VNC clients
 Name: gtk-vnc
 Version: 0.4.2
-Release: 3%{?dist}%{?extra_release}
+Release: 4%{?dist}%{?extra_release}
 License: LGPLv2+
 Group: Development/Libraries
 Source: http://ftp.gnome.org/pub/GNOME/sources/%{name}/0.4/%{name}-%{version}.tar.bz2
@@ -26,6 +26,7 @@ Patch1: %{name}-%{version}-motion-event-crash.patch
 Patch2: %{name}-%{version}-tls-shutdown-crash.patch
 Patch3: %{name}-%{version}-framebuffer-update-bounds-check.patch
 Patch4: %{name}-%{version}-pixmap-cache.patch
+Patch5: %{name}-%{version}-source-unref.patch
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 URL: http://live.gnome.org/gtk-vnc
 BuildRequires: gtk2-devel >= 2.14
@@ -154,6 +155,7 @@ cd %{name}-%{version}
 %patch2 -p1
 %patch3 -p1
 %patch4 -p1
+%patch5 -p1
 cd ..
 %if %{with_gtk3}
 cp -a gtk-vnc-%{version} gtk-vnc2-%{version}
@@ -299,6 +301,9 @@ rm -fr %{buildroot}
 
 
 %changelog
+* Tue Dec 14 2010 Daniel P. Berrange <berrange@redhat.com> - 0.4.2-4
+- Fix unref of GSource objects to address performance degradation (rhbz #657847)
+
 * Mon Nov 29 2010 Daniel P. Berrange <berrange@redhat.com> - 0.4.2-3
 - Re-introduce a server side pixmap via cairo to cache framebuffer (rhbz #657542)