Re: [Xenomai-help] debug posix skin - pthread_cond_wait return EPERM

["Waschk,Kolja" <xenoka09@domain.hid>]

Hi,

> reference, and the program is bogus in the way it handles
> pthread_cond_wait errors, as I already explained,

You're certainly right with that. It's just that I have to deal with foreign
code that contains exactly such tight loops with pthread_cond_wait as its
only brake, and this code I'd like to use unmodified, as far as possible. Now
the test code try.c started as a clone of the original, so it has the same
obvious shortcomings.

> missing a call to mlockall without which it can not possibly run under
> Xenomai.

Oh, you're right (but it's present in the original code)

> program, since you should be using #include <pthread.h>, instead of
> #include <posix/pthread.h>, and more importantly, this program is

Yes. That's an artefact of another problem which seems more toolchain-related
in my case. Already noted in our issue tracking system. However, I tried to
verify that everything is wrapped and linked as supposed;

> So, to settle the matters, could you post here the result of
> "bfin-linux-uclibc-nm -s try".
> ?

The result is

00002158 A ___bss_start
00002158 b _completed.4861
000021ac B _cond
00001f78 d ___CTOR_END__
00001f74 d ___CTOR_LIST__
          w ___deregister_frame_info@domain.hid
00000e5c t ___do_global_ctors_aux
00000a58 t ___do_global_dtors_aux
00002068 D ___dso_handle
00000ea0 R _dt
00001f80 d ___DTOR_END__
0000215c b _dtor_idx.4863
00001f7c d ___DTOR_LIST__
00001f88 d _DYNAMIC
00002158 A __edata
00000f70 r ___EH_FRAME_BEGIN__
000021b8 A __end
00002184 B _errbits
          U ___errno_location
00000e8c T __fini
00000ac4 t _frame_dummy
00000f70 r ___FRAME_END__
000020e0 d __GLOBAL_OFFSET_TABLE_
00000780 T __init
00001f84 d ___JCR_END__
00001f84 d ___JCR_LIST__
          w __Jv_RegisterClasses
00002178 B _loopcount
00000c7c T _main
00002190 B _mutex
00002160 b _object.4883
          U _printf
00000b0c W _pthread_atfork
          U _pthread_attr_init
          U _pthread_join
          w ___register_frame_info@domain.hid
00000f70 R __ROFIXUP_END__
00000f1c R __ROFIXUP_LIST__
000021a8 B _run
000008ec t ___self_reloc
00000b20 W _shm_open
00000b3c W _shm_unlink
          U _sleep
00020000 A __stacksize
00000888 T __start
00000b54 T _test_thread
          U ___uClibc_main
          U ___wrap_pthread_cond_broadcast
          U ___wrap_pthread_cond_init
          U ___wrap_pthread_cond_wait
          U ___wrap_pthread_create
          U ___wrap_pthread_mutex_init
          U ___wrap_pthread_mutex_lock
          U ___wrap_pthread_mutex_unlock
          U ___wrap_pthread_yield


-- 
mr. kolja waschk - haubach-39 - 22765 hh - germany
fon +49 40 889130-34 - fax -35 - http://www.ixo.de