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Hi,<br>
<br>
One more clarification please :<br>
<br>
In order for my thread to use the session data before the session is
destroyed I am using<br>
my own mutex and condition signal. e.g.<br>
<br>
(pseudo code follows) :<br>
<br>
thread_function(switch_thread_t *thread, void *ptr){ <br>
<br>
// the pointer ptr is a struct that contains a pointer to session,the
mutex and condition created in the calling thread<br>
<br>
(session dependend stuff)<br>
<br>
switch_thread_cond_signal(sth->cond); //sends signal to calling
thread that we stopped using the session so it can exit<br>
<br>
(session independent stuff)<br>
<br>
}<br>
calling_function(switch_core_session_t *session){<br>
<br>
(init stuff)<br>
<br>
switch_mutex_init(&thread_params->mutex,
SWITCH_MUTEX_NESTED, pool);<br>
switch_thread_cond_create(&thread_params->cond, pool);<br>
<br>
(thread creation stuff)<br>
<br>
switch_mutex_lock( thread_params->mutex );<br>
<br>
switch_thread_cond_wait(thread_params->cond,
thread_params->mutex); // this is were the calling thread waits for
a signal<br>
<br>
switch_mutex_unlock( thread_params->mutex );<br>
<br>
return SWITCH_STATUS_SUCCESS;<br>
<br>
}<br>
<br>
Is the above correct? Is there another way to create a "wait" state for
the calling thread until the child thread <br>
is done with the session data?<br>
<br>
<br>
<br>
<br>
Apostolos Pantsiopoulos wrote:
<blockquote cite="mid:4981C7A0.7090000@kinetix.gr" type="cite">
<meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
Thanks for the explanations (both Anthony and Michael).<br>
You both clarified the subject quite well.<br>
<br>
Anthony Minessale wrote:
<blockquote
cite="mid:191c3a030901290555i58186cc8p2cdecd7b700f33dc@mail.gmail.com"
type="cite">if your intent is to keep the data around longer than the
session in it's own thread, you will want to make a new pool <br>
and use that pool to launch the thread. pass the pool into the thread
as a member of your thread private data and free<br>
the pool before you exit the thread.<br>
<br>
You cannot bring the session with you into the thread unless you read
lock the session first so it will not be destroyed while<br>
you are using it in the thread.<br>
<br>
Be aware keeping the session around in the thread just a wild goose
chase from doing it the why it already was doing it.<br>
The session thread is already independent and it does not stop any
other call from proceeding so you may as well do all the work<br>
in your session thread in the state change handler like it already does
and just add more strict timeout.<br>
<br>
<br>
<div class="gmail_quote">On Thu, Jan 29, 2009 at 7:23 AM, Apostolos
Pantsiopoulos <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:regs@kinetix.gr">regs@kinetix.gr</a>></span> wrote:<br>
<blockquote class="gmail_quote"
style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000">The question is : which
pool
should I use for each different thing I am
trying to accomplish?<br>
<br>
For instance the code below is part of my mod_radius_cdr
experimentation.<br>
When I am making use of a pool within a module should I :<br>
<br>
a) create a new pool?<br>
b) make use of an existing one?<br>
c) what kind of pool should I use?<br>
d) is it really just one pool (accessed through different handlers) and
I am making myself look like a fool so far?
<div>
<div class="Wj3C7c"><br>
<br>
<br>
<br>
<br>
<br>
Michael Jerris wrote:
<blockquote type="cite">
<pre>I am not sure even after re-reading what your question is, could you
try to rephrase?
Mike
On Jan 29, 2009, at 8:00 AM, Apostolos Pantsiopoulos wrote:
</pre>
<blockquote type="cite">
<pre>I found it out by myself!
(why is it that we always come with the solution right after posting
to
the list?)
I inserted :
thread_params = switch_core_session_alloc(session,
sizeof(*thread_params));
before the pool initialization.
But still, can I get some answers to the questions bellow about
how to effectively handle memory allocations?
Apostolos Pantsiopoulos wrote:
</pre>
<blockquote type="cite">
<pre>I have the code below :
struct radacct_thread_handle {
switch_core_session_t *session;
switch_mutex_t *mutex;
switch_thread_cond_t *cond;
};
static switch_status_t my_on_routing(switch_core_session_t *session){
switch_thread_t *thread;
switch_threadattr_t *thd_attr = NULL;
switch_memory_pool_t *pool;
struct radacct_thread_handle *thread_params = NULL;
pool = switch_core_session_get_pool(session);
thread_params->session = session;
...
}
when the program reaches the last line (thread_params->session =
session;)
I get a core dump. Is this a memory allocation error? Is it because
I am
making
use of the wrong pool? Please enlighten me because I am not an
experienced c
programmer, and I am struggling to get familiar with the FS API.
</pre>
</blockquote>
</blockquote>
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-------------------------------------------
Apostolos Pantsiopoulos
Kinetix Tele.com R & D
email: <a moz-do-not-send="true" href="mailto:regs@kinetix.gr"
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<br>
-- <br>
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<br>
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<pre class="moz-signature" cols="72">--
-------------------------------------------
Apostolos Pantsiopoulos
Kinetix Tele.com R & D
email: <a moz-do-not-send="true" class="moz-txt-link-abbreviated"
href="mailto:regs@kinetix.gr">regs@kinetix.gr</a>
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-------------------------------------------
Apostolos Pantsiopoulos
Kinetix Tele.com R & D
email: <a class="moz-txt-link-abbreviated" href="mailto:regs@kinetix.gr">regs@kinetix.gr</a>
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