GTK+ AWT peer application on arm: RAM issue

Hi guys,

I've compiled arm-linux-gcj (gcc 4.3.0) with GTK+ AWT peers and now I would like to test a simple graphical application on my embedded box (PXA270, 128MB Ram, with LCD monitor).

Here is the code:

import javax.swing.*;

public class SimpleFrame {
  public static void main(String args[]) {
    JFrame f = new JFrame("Simple Frame");
    f.setSize(200,100);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);
  }
}

I moved libgtkpeer.so library to the filesystem of embedded box and all the libraries required by libgtkpeer.so. I've taken these libraries from arm fedora rpms (http://ftp.linux.org.uk/pub/linux/arm/fedora/pub/fedora/linux/releases/8/Everything/arm/os/Packages/).

Here are the needed libraries:

        libgtk-x11-2.0.so.0 => /usr/lib/libgtk-x11-2.0.so.0 (0x00000000)
        libgdk-x11-2.0.so.0 => /usr/lib/libgdk-x11-2.0.so.0 (0x00000000)
        libatk-1.0.so.0 => /usr/lib/libatk-1.0.so.0 (0x00000000)
        libpangocairo-1.0.so.0 => /usr/lib/libpangocairo-1.0.so.0 (0x00000000)
        libcairo.so.2 => /usr/lib/libcairo.so.2 (0x00000000)
        libgthread-2.0.so.0 => /usr/lib/libgthread-2.0.so.0 (0x00000000)
        librt.so.1 => /lib/librt.so.1 (0x00000000)
        libgdk_pixbuf-2.0.so.0 => /usr/lib/libgdk_pixbuf-2.0.so.0 (0x00000000)
        libm.so.6 => /lib/libm.so.6 (0x00000000)
        libpangoft2-1.0.so.0 => /usr/lib/libpangoft2-1.0.so.0 (0x00000000)
        libpango-1.0.so.0 => /usr/lib/libpango-1.0.so.0 (0x00000000)
        libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x00000000)
        libz.so.1 => /usr/lib/libz.so.1 (0x00000000)
        libfontconfig.so.1 => /usr/lib/libfontconfig.so.1 (0x00000000)
        libgobject-2.0.so.0 => /usr/lib/libgobject-2.0.so.0 (0x00000000)
        libgmodule-2.0.so.0 => /usr/lib/libgmodule-2.0.so.0 (0x00000000)
        libdl.so.2 => /lib/libdl.so.2 (0x00000000)
        libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0x00000000)
        libX11.so.6 => /usr/lib/libX11.so.6 (0x00000000)
        libXtst.so.6 => /usr/lib/libXtst.so.6 (0x00000000)
        libpthread.so.0 => /lib/libpthread.so.0 (0x00000000)
        libc.so.6 => /lib/libc.so.6 (0x00000000)
        libXcomposite.so.1 => /usr/lib/libXcomposite.so.1 (0x00000000)
        libXdamage.so.1 => /usr/lib/libXdamage.so.1 (0x00000000)
        libXfixes.so.3 => /usr/lib/libXfixes.so.3 (0x00000000)
        libXext.so.6 => /usr/lib/libXext.so.6 (0x00000000)
        libXrender.so.1 => /usr/lib/libXrender.so.1 (0x00000000)
        libXinerama.so.1 => /usr/lib/libXinerama.so.1 (0x00000000)
        libXi.so.6 => /usr/lib/libXi.so.6 (0x00000000)
        libXrandr.so.2 => /usr/lib/libXrandr.so.2 (0x00000000)
        libXcursor.so.1 => /usr/lib/libXcursor.so.1 (0x00000000)
        libpng12.so.0 => /usr/lib/libpng12.so.0 (0x00000000)
        libpixman-1.so.0 => /usr/lib/libpixman-1.so.0 (0x00000000)
        libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00000000)
        libgcc_s.so.1 => libgcc_s.so.1 (0x00000000)
        libselinux.so.1 => /lib/libselinux.so.1 (0x00000000)
        libexpat.so.1 => /usr/lib/libexpat.so.1 (0x00000000)
        libpcre.so.3 => /usr/lib/libpcre.so.3 (0x00000000)
        libxcb-xlib.so.0 => /usr/lib/libxcb-xlib.so.0 (0x00000000)
        libxcb.so.1 => /usr/lib/libxcb.so.1 (0x00000000)
        libXau.so.6 => /usr/lib/libXau.so.6 (0x00000000)
        ld-linux.so.2 => /lib/ld-linux.so.2 (0x00000000)
        libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x00000000)


I see that libgtkpeer is using libX11, is this the best choice for an embedded system? Would DirectFB be an alternative? Is there any way to build GTK+ AWT peer for DirectFB?

However I'm getting the following error when I try to run on my embedded box SimpleFrame compiled with gcj:

Warning: Out of Memory! Returning NIL!

I have like 120 MB of free ram when I try to do this.
Using "top" I see that SimpleFrame eats all the ram after loading all the needed libraries (I can see that from strace log).

Do I need to start the X11 server before running the application or do I need any other libraries to run a graphical application from a box without any windowing system?

Can anyone test which is the RAM footprint of SimpleFrame compiled with gcj and GTK+ AWT peers running on an arm box?

I feel like I'm missing something between gtk/glib layer and framebuffer, would anyone clarify this please?

Thank you,

Francesco