On date Monday 2008-09-08 10:08:39 +0200, Stefano Sabatini wrote:
> On date Friday 2008-09-05 12:10:10 +0200, Stefano Sabatini wrote:
> > On 9/5/08, Stefano Sabatini <[EMAIL PROTECTED]> wrote:
> > > Hi all,
> > >
> > > I have a multithreaded application, and I need to run the sofia-sip
> > > event loop not in the main process context, but in the context of a
> > > thread.
> > >
> > > I implemented it this way.
> > > I implemented a method Run() which instantiates the thread instance
> > > and makes it execute su_root_run(), and a Stop() method which
> > > executes su_root_break() and wait for the thread termination.
> > >
> > > Unfortunately this approach seems not to work, as I get this message
> > > from the sofia stack:
> > > nua(0x8729740): signal r_invite
> > > SIPEngineTest: su_base_port.c:322: su_base_port_run: Assertion
> > > `su_port_own_thread(self)' failed.
> > >
> > > and the process gets terminated by the SIGABRT signal.
> > >
> > > I'm currently stuck with it, can someone help/provide some hint?
> >
> > Do I need to use the interface defined in su_wait.h?
> > I was using the functions provided in another library for managing
> > threading.
>
> Well I read the documentation for su_wait.h but I stll can't figure
> out how to use it.
>
> Since there is no way to create explicitly a thread, I think the
> nearest think to the thread concept is the task, then I can't see any
> reference to mutexes so I have no idea about how synchronization may
> work here (mmh well should I use messages for that?).
>
> Please can someone suggest just a simple way to use the sofia API to
> create and run a thread?
Here it is my first attempt at sofia threading:
----------------------------------------------8<-------------------------
#include <stdio.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
/* this defines the kind of magic to pass to the handler, contains the
application context */
#define SU_ROOT_MAGIC_T void
#include <sofia-sip/su.h>
#include <sofia-sip/su_wait.h>
int countdown_init(su_root_t* root, su_root_magic_t* magic)
{
int i;
printf("click clack click clack...\n");
for (i=10; i > 0; i--) {
sleep(1);
printf("%d...\n", i);
}
return 0;
}
void countdown_deinit(su_root_t* root, su_root_magic_t* magic)
{
printf("BOOM...\n");
}
int main (int argc, char *argv[])
{
su_root_t *root;
/* Initialize Sofia-SIP library and create event loop */
su_init();
root = su_root_create(NULL); /* create a root object, don't pass to it any
context */
/* enable threading, now su_clone_start will start a new thread */
if (!su_root_threading(root, 1)) {
fprintf(stderr, "Failed to activate threading\n");
exit(1);
}
su_clone_r clone;
/* this is blocking */
su_clone_start(root,
clone,
NULL,
&countdown_init,
&countdown_deinit);
printf("main process thread...\n");
/* Destroy allocated resources */
su_root_destroy(root);
su_deinit();
exit(0);
}
----------------------------------------------8<-------------------------
And this is the output:
click clack click clack...
10...
9...
8...
7...
6...
5...
4...
3...
2...
1...
main process thread...
In this case the call to the countdown_init function is blocking,
furthermore the countdown_deinit function is not called at all.
What (possbily silly) am I missing?
TIA, regards.
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