1 files changed, 97 insertions, 0 deletions
diff --git a/gnu/java/awt/peer/gtk/GtkMainThread.java b/gnu/java/awt/peer/gtk/GtkMainThread.java
new file mode 100644
index 000000000..19d3f1d0b
--- /dev/null
+++ b/gnu/java/awt/peer/gtk/GtkMainThread.java
@@ -0,0 +1,97 @@
+/* GtkMainThread.java -- Wrapper for the GTK main thread, and some utilities.
+   Copyright (C) 2006  Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.java.awt.peer.gtk;
+
+public class GtkMainThread extends Thread
+{
+  /** Count of the number of open windows */
+  private static int numberOfWindows = 0;
+
+  /** Lock for the above */
+  private static Object nWindowsLock = new Object();
+
+  /** The main thread instance (singleton) */
+  public static GtkMainThread mainThread;
+
+  /** Constructs a main thread */
+  private GtkMainThread()
+  {
+    super("GTK main thread");
+  }
+
+  public void run ()
+  {
+    GtkToolkit.gtkMain ();
+  }
+
+  private static void startMainThread()
+  {
+    if( mainThread == null )
+      {
+	mainThread = new GtkMainThread();
+	mainThread.start();
+      }
+  }
+
+  private static void endMainThread()
+  {
+    if( mainThread != null )
+      GtkToolkit.gtkQuit();
+  }
+
+  public static void createWindow()
+  {
+    synchronized( nWindowsLock )
+      {
+	if( numberOfWindows == 0 )
+	  startMainThread();
+	numberOfWindows++;
+      }
+  }
+
+  public static void destroyWindow()
+  {
+    synchronized( nWindowsLock )
+      {
+	numberOfWindows--;
+	if( numberOfWindows == 0 )
+	  endMainThread();
+      }
+  }
+}
+\ No newline at end of file