[Asterisk-Dev] no mutex_assert call ?

[Luigi Rizzo]

On Tue, Dec 20, 2005 at 06:52:11AM -0600, Kevin P. Fleming wrote:
> Olle E Johansson wrote:
> 
> > Check my patches for ast_channel_lock in the issue tracker.
> > I use the counter for debugging messages in Linux. In FreeBSd, I could 
> > not find it.
> 
> Right, it's very implementation specific.
> 
> Turning on DEBUG_THREADS adds Asterisk-specific wrappers around the 
...
>   I have a project on my board to enhance them to use Thread Local 
> Storage (TLS) to track which locks are owned by a thread, with the hope 
> that in a core dump we'll actually be able to see that information easily.

BTW do you know, by chance, how to make "static" symbols be
visible to the backtrace_symbols() call so we can try to
get more detailed logs at runtime ?
I am using this code to figure out how we got to places:

	/* Obtain a backtrace and print it to stdout. */
	void print_trace (void);
	void print_trace (void)
	{
	  void *array[50];
	  size_t size;
	  char **strings;
	  size_t i;

	  size = backtrace (array, 30);
	  strings = backtrace_symbols (array, size);

	  ast_log(LOG_WARNING, "Obtained %d stack frames.\n", size);

	  for (i = 0; i < size; i++) 
	     ast_log(LOG_WARNING, "%s\n", strings[i]);

	}

but static symbols (almos all are, in a module) are not visible
so we do not get very interesting info for them.

Also speaking of threads, is there any docs around to get a rough idea
of which threads are created and what do they do ? (e.g. timer
handling, etc ?)
i remember you mentioned some slides you presented at astricon or
some other conference but i cannot recall the url if it was
posted at all

thanks
luigi