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2013-11-22Fix undefined behaviour in pulseaudio --start.Stefan Sperling3-1/+16
Don't call pthread_join() to join a thread from a different process than the thread was created in. Doing so can lead to undefined behaviour. On OpenBSD, the symptom was a pulseaudio process with a single thread waiting forever for other threads to join. Since that process also held the autospawn lock, starting new pulseaudio processes with --start kept failing. The problem was analyzed with help from Philip Guenther. This patch adds a pa_thread_free_nojoin() function which can be used to free resources for a thread without a join, as suggested by Tanu Kaskinen. See https://bugs.freedesktop.org/show_bug.cgi?id=71738