[Freeswitch-users] hanging problem with switch_scheduler_add_task

[Rupa Schomaker]

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 at 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 at 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 at 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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>>
>>
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>
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-- 
-Rupa