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This patch introduces a mandatory layer attribute to domains. The layer ordering is superimposed on the stacking order of the views. The top-most layer can be assigned to a pointer-managing client. An example for such a pointer is located at os/src/app/pointer. It replaces the formerly built-in nitpicker mouse cursor. The new layering mechanism replaces the former "stay-top" session argument. So the Nitpicker::Connection no longer takes the stay-top flag as the first argument.
This is the example operating system based on the Genode OS framework: :_Init_: is the first real process in the system. The provided implementation uses a very simple XML parser to read its configuration files. :_Drivers_: The example OS has basic drivers for frame buffer, mouse and keyboard input, the PCI bus, the real-time clock, and system-specific timers. :_Server_: The only server in the example OS is Nitpicker, a minimal-complexity GUI server. :_Test_: are also part of the example OS. You may have a look at the fork bomb as a simple system stress test. :_Ldso_: is the dynamic linker used for loading executables that are linked against shared libraries. :_Lib_: contains libraries used by the components of the OS repository, in particular the device-driver kit, the alarm framework, and support for dynamic linking.