[Freeswitch-users] esl api issues

[leonhe]

Hi All,

 

Recently I'm writing an Application with ESL in inbound mode. I have two
issues:

 

1)       esl_recv_event()

a)         Each time I call this interface,  handle->last_ievent will be
updated to be the oldest event. Just like de-queue the oldest event from
FIFO.

My assumption is right or not?

b)         After call this interface, may I access "handle->last_ievent"
without any protection( without mutex/lock)?

If there is any risk of handle->last_ievent is updated during my access, for
example some other interfaces are called or new events are received from FS
side.

Per my experience,  seems has such risk.

 

2)       esl_execute()

 

When I read the implementation of the code,  is there any possibility to
dead lock as following?

esl_execute()

    +-->esl_send_recv /esl_send_recv_timed(_handle, _cmd, 0)

         +--> esl_mutex_lock(handle->mutex);        <<<<< lock for 1st time

                +--> esl_recv_event_timed(handle, ms, 0, &handle
->last_sr_event)

                     +--> esl_recv_event()

                         +----> esl_mutex_lock(handle->mutex);  <<<<<< lock
for 2nd time, but preview one is not unlock

 

         Can anyone confirm this?

 

BR

Leon

 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20140806/ba9220d3/attachment.html