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Building lwip
by Peter Nguyen 22 Feb '10

22 Feb '10

Hi, I'm trying to build the lwip test so that I can make a start on experimentation. However, I keep on getting build errors. To build this package, I included the libports package, and also the libc package. However, I keep getting errors about how size_t hasn't been declared in scope. I also tried including my own definition for size_t, but other errors result. What is the correct way of building the lwip package? Peter

5 15

race in oklinux/contrib/arch/l4/kernel/sys_genode.c
by Sven Fülster 17 Feb '10

17 Feb '10

Hi all, you have a race condition in oklinux/contrib/arch/l4/kernel/sys_genode.c resp. oklx_genode.patch lines 1894..1905 #ifdef CONFIG_FB_GENODE + if(genode_input_initialized()) + { + /* Put the input events into our framebuffer driver */ + num = genode_input_flush(); + for(i=0;i<num;i++) { + genode_input_event(i, genode_fb_mouse_event, genode_fb_key_event); + } + } +#endif //CONFIG_FB_GENODE + + genode_lock(timer_main_kernel_lock); which shows up under heavy load (freezing Xfbdev, raising some BUG()s or a pagefault in update_stats_wait_end). Moving the input polling into the critical section solved the problem here: + genode_lock(timer_main_kernel_lock); + #ifdef CONFIG_FB_GENODE + if(genode_input_initialized()) + { + /* Put the input events into our framebuffer driver */ + num = genode_input_flush(); + for(i=0;i<num;i++) { + genode_input_event(i, genode_fb_mouse_event, genode_fb_key_event); + } + } +#endif //CONFIG_FB_GENODE Cheers Sven -- Sven FÃ¼lster

2 1

Interaction with L4
by Peter Nguyen 31 Jan '10

31 Jan '10

Hi, I'm trying to port some code that I originally implemented in Iguana. This functionality pertains to profiling functionality. In my current setup (ie. with Iguana), I added an L4 system call (OKL4) to start and stop profiling. I'm wondering whether it's possible at all to use OKL4 functionality directly in writing genode apps. The profiling code that I have implemented is L4 code, where some of the code uses OKL4 IPC primitives and a small amount of Iguana based code with regards to creating threads. Any help on this would be greatly appreciated. Thanks Peter N

3 21

additional question from "memcpy, strlen etc."
by Peter Nguyen 29 Jan '10

29 Jan '10

As an addition to the previous post by me, I have some pre-existing C code that I want to use in a Genode server I have created, and I don't really want to change this code. Currently, i'm not able to utilize functions like printf, memcpy etc in the C code i've written. What header files can I include to ensure that functions like memcpy and printf work in my code? From what I can see, the build process does not recognize the standard header files at all. Peter

4 3

Further response
by Peter Nguyen 28 Jan '10

28 Jan '10

Hi, In doing some more investigating, for some reason, that message seems to pop up when i instantiate a thread. Before this thread, i instantiate 3 threads, which execute fine, yet when i instantiate this 4th thread, it doesn't work. Furthermore, when i only instantiate this 4th thread (ie. commenting out the 3 previous thread instantiations), this thread works fine. Peter

2 1

qt4 on genode 9.11 on l4ka:pistachio
by Tang, Shuo 22 Jan '10

22 Jan '10

Hi, I am trying to get qt4 on genode 9.11 to work. I am using pistachio. When I try to run a iso using qemu, it halt and give a pagefault on CPU 0. Does anyone have a grub menu list file and genode config file for a qt4 demo? I have no problem running simple genode application on pistachio such as scout. Thanks, Shuo

2 1

Thread IDs
by Peter Nguyen 20 Jan '10

20 Jan '10

Hi, So I've done some more messing around with genode (running on top of OKL4), more specifically creating some threads, and testing the functionality in general. I'm wondering how i can go about obtaining the thread's ID and printing it out. I've noticed that there are functions that are within the Thread class that can get me a Native_thread_id, but currently I can't seem to do much with it. Speaking of the native thread, is that type related to L4? Can I actually get a numerical value for that ID? Peter

2 3

Build errors
by Peter Nguyen 18 Jan '10

18 Jan '10

Hi, In running genode with the "hello" app, I keep getting the following message: [init] starting hello_server with quota=262144 [init] using unique child name "hello_server" [init] Warning: Could not open file "hello_server" at ROM service. I also get the same thing with the hello client. Does this mean that the hello app is not loading at all? What do I need to do to fix this? Thanks Peter N

2 1

Broken assertion
by Peter Nguyen 05 Jan '10

05 Jan '10

Hi, In the wiki describing how to build Genode on OKL4, does the bug alert refer to following message: An error occurred: [Errno 2] No such file or directory: 'config'? I've followed the build instructions, and i've changed the value as suggested as the quick fix, but I still get this error. As usual, any help would be greatly appreciated. Peter

2 1

Cannot run genode
by Peter Nguyen 04 Jan '10

04 Jan '10

Hi, I'm trying to boot genode on OKL4 natively. I followed the instructions for building genode via the following link: http://genode.org/community/wiki/revisions/GenodeOnOKL4.6/?searchterm=build I've tried building version 9.05, but when i try to boot it up, i keep getting a grub error (Error 28: Selected item cannot fit into memory). Does anyone have any ideas why this is occurring? Peter N

3 2

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