disable thread dispatch problem

[Sebastian Huber]

On 07/09/2012 08:28 AM, Ashi wrote:
>
>
> 2012/7/6 Sebastian Huber <sebastian.huber at embedded-brains.de
> <mailto:sebastian.huber at embedded-brains.de>>
>
>     On 07/06/2012 11:49 AM, Ashi wrote:
>
>         I've a problem of _Thread_Disable_dispatch() function in below code.
>         It's my
>         implementation of _POSIX_Keys_Run_destructors() function. I come across the
>         problem when I run the psxkey03 test:if _Thread_Disable_dispatch() was
>         commented out, psxkey03 can run without problem. when
>         _Thread_Disable_dispatch() added at line 1(as below), psxkey03 will fail. I
>         debug it in sparc-rtems4.11-gdb, and find psxkey03 runs into
>         _Internal_error_Occurred() function then stop. I know
>         _POSIX_Keys_Get()(at line
>         12) will also disable thread dispatch--does this lead to the problem?
>         However,
>         can't figure out where exactly the problem exists, could anyone explain
>         it? Thanks!
>
>
>     The _Thread_Disable_dispatch() can nest.  I suppose you want to acquire a
>     resource in the destructor which is not free.  The path to
>     _Internal_error_Occurred() should show the problem.
>
> Sebastian, I follow the calls in gdb, and find the error is:
>   Program received signal SIGINT, Interrupt.
> 0x020168b8 in _Internal_error_Occurred (the_source=INTERNAL_ERROR_CORE,
> is_internal=true, the_error=5)
>      at ../../../../../../rtems/c/src/../../cpukit/score/src/interr.c:58
> 58      _CPU_Fatal_halt( the_error );

What is the call stack here?

The error=5 is probably INTERNAL_ERROR_THREAD_EXITTED (see also 
Internal_errors_Core_list).  How did you terminate the task?

-- 
Sebastian Huber, embedded brains GmbH

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