[ECOS] httpd/monitor problem

Andrew Lunn andrew.lunn@ascom.ch
Thu May 15 10:46:00 GMT 2003


On Thu, May 15, 2003 at 12:19:35PM +0200, Daniel Lidsten wrote:
> Hi,
> 
> I have included the httpd/monitor in my build and i get a strange assert when i hit the "thread" option in the "monitor/index.html".
> 
> Here is my printout:
> 
> ASSERT FAIL: <2>kapi.cxx            [ 334] cyg_bool_t cyg_thread_get_next()
>                                     class pointer (thread) is valid
> 
> The printout comes from the following row in cyg_thread_get_next:
> 
> CYG_ASSERT_CLASSC( thread );
> 
> What does this mean?

I suspect the "is valid" should be "is invalid". The macro causes the
check_this() method to be called on the thread class. You can find
that function in packages/kernel/current/src/common/thread.cxx.

Probably the thread is a null pointer, although it could be the stack
pointer is out of range. If it is a null pointer, that means *current
passed into the function is a null pointer. That should be easy to
check with gdb. I would checked what is going on in the monitor.c code
when it enumerates the threads. I've had this working with synth, but
never tried it on real hardware.

     Andrew

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