[pulseaudio-discuss] pulseaudio daemon not responging

[Arun Raghavan]

On Thu, 2012-11-22 at 23:07 +0200, Stefan Stefanov wrote:
> Can anyone explain me what is wrong with libpthread-stub.so?
> 
> As I understand, sem_wait() works as intended according to the source code:
> static int __sem_wait_stub(sem_t *_sem)
> {
>     unsigned int *sem = (unsigned int *) _sem;
>     if (!*sem) {
>          /* Not available, simulate a blocking sem_wait */
>          pause();
>          errno = EINTR;
>          return -1;
>     }
>     *sem--;
>     return 0;
> }
> 
> If the semaphore is available, sem_wait decrements the semaphore value
> and returns to the caller.
> If the semaphore is unavailable, sem_wait suspends execution of the
> calling thread by call of pause().
> 
> Obviously in our case semaphor is unavailable (null), thus it blocks.

I don't know about the specific problem here, but the fact that you're
using a pthread stub library instead of an actual implementation
suggests that you're going to have a number of problems trying to get
things to work.

-- Arun