Use gcore to get a core dump. It will pause the process for the duration of the dump, but will not kill the process. On Fri, Aug 21, 2009 at 11:24 AM, mark morreny<markmorreny@gmail.com> wrote:

Hi Mathieu,

Thanks for your help.

How can I intentionally crash a hanging freeswitch and obtain the core file to run gdb?

Thanks, Mark

On Fri, Aug 21, 2009 at 11:59 PM, Mathieu Rene <mrene_lists@avgs.ca> wrote:

...

Means another task is hanging, do a "thread apply all bt" in gdb and look for scheduler tasks.

Mathieu Rene Avant-Garde Solutions Inc Office: + 1 (514) 664-1044 x100 Cell: +1 (514) 664-1044 x200 mrene@avgs.ca

On 21-Aug-09, at 11:41 AM, mark morreny wrote:

...

Hi,

I am experiencing some hanging when fs is executing switch_scheduler_add_task.

switch_scheduler_add_task(switch_epoch_time_now(NULL) , data_flush_callback, "data_flush","core",0,NULL,SSHF_NONE| SSHF_NO_DEL);

I place switch_scheduler_add_task in my SWITCH_MODULE_LOAD_FUNCTION and sometimes, hanging occurs on that particular line.  My data_flush_callback is as follows.  I debug the module and it does not even enter data_flush_callback.  It is hanging at switch_scheduler_add_task().

SWITCH_STANDARD_SCHED_FUNC(data_flush_callback) {

    switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "starting to flush cdr record...\n");

    int last_sequence = flush_data_to_csv();     if (last_sequence > -1 ) {

        update_last_seq(last_sequence);     }     task->runtime = switch_epoch_time_now(NULL) + globals.cycle_time;

}

Does anyone know why?

Thanks, Mark

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