kdesktop: fix deadlock condition between kdesktop and kdesktop lock.

The logic to handle communication with kdesktop_lock is now running
completely in a separate thread and event loop, meaning the main GUI
thread remains responsive all the time and can handle interaction with
X11, DCOP and DBUS calls. This resolves issue #589.
The commit also solves the first problem reported in issue #640 and
loosely related to PR #526.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit 409442c1ea8f167485642fbdb3494ff58900966f)

1 files changed, 7 insertions, 11 deletions

diff --git a/kdesktop/main.cpp b/kdesktop/main.cpp
index 5a04c9bed..33726cb41 100644
--- a/kdesktop/main.cpp
+++ b/kdesktop/main.cpp
@@ -71,7 +71,7 @@ static TDECmdLineOptions options[] =
 };
 
 bool argb_visual = false;
-KDesktopApp *myApp = NULL;
+KDesktopApp *myApp = nullptr;
 
 // -----------------------------------------------------------------------------
 
@@ -251,7 +251,7 @@ extern "C" TDE_EXPORT int kdemain( int argc, char **argv )
         else
             XCloseDisplay( dpy );
     }
-    if( myApp == NULL )
+    if (!myApp)
         myApp = new KDesktopApp;
 #else
     myApp = new KDesktopApp;
@@ -260,9 +260,6 @@ extern "C" TDE_EXPORT int kdemain( int argc, char **argv )
 
     KDesktopSettings::instance(kdesktop_name + "rc");
 
-    bool x_root_hack = args->isSet("x-root");
-    bool wait_for_kded = args->isSet("waitforkded");
-
     // This MUST be created before any widgets are created
     SaverEngine saver;
 
@@ -279,16 +276,15 @@ extern "C" TDE_EXPORT int kdemain( int argc, char **argv )
        myApp->config()->reparseConfiguration();
     }
 
-    // for the KDE-already-running check in starttde
-    TDESelectionOwner kde_running( "_KDE_RUNNING", 0 );
-    kde_running.claim( false );
+    // for the TDE-already-running check in starttde
+    TDESelectionOwner tde_running( "_KDE_RUNNING", 0 );
+    tde_running.claim( false );
 
+    bool x_root_hack = args->isSet("x-root");
+    bool wait_for_kded = args->isSet("waitforkded");
     KDesktop desktop( &saver, x_root_hack, wait_for_kded );
 
     args->clear();
-
     myApp->dcopClient()->setDefaultObject( "KDesktopIface" );
-
-	
     return myApp->exec();
 }