Wait for an event to be signalled by the event loop thread. You
* can use this to pass data from the event loop thread to the main
* thread in a synchronized fashion. This function may not be called
* inside the event loop thread. Prior to this call the event loop
* object needs to be locked using pa_threaded_mainloop_lock(). While
* waiting the lock will be released. Immediately before returning it
* will be acquired again. This function may spuriously wake up even
* without pa_threaded_mainloop_signal() being called. You need to
* make sure to handle that!
Wait for an event to be signalled by the event loop thread. You * can use this to pass data from the event loop thread to the main * thread in a synchronized fashion. This function may not be called * inside the event loop thread. Prior to this call the event loop * object needs to be locked using pa_threaded_mainloop_lock(). While * waiting the lock will be released. Immediately before returning it * will be acquired again. This function may spuriously wake up even * without pa_threaded_mainloop_signal() being called. You need to * make sure to handle that!