void pa_asyncq_write_before_poll(pa_asyncq *l) {
pa_assert(l);
for (;;) {
if (flush_postq(l, FALSE))
break;
if (pa_fdsem_before_poll(l->read_fdsem) >= 0) {
l->waiting_for_post = TRUE;
break;
}
}
}
int pa_asyncq_read_before_poll(pa_asyncq *l) {
unsigned idx;
pa_atomic_ptr_t *cells;
pa_assert(l);
cells = PA_ASYNCQ_CELLS(l);
_Y;
idx = reduce(l, l->read_idx);
for (;;) {
if (pa_atomic_ptr_load(&cells[idx]))
return -1;
if (pa_fdsem_before_poll(l->write_fdsem) >= 0)
return 0;
}
}
static void srbchannel_rwloop(pa_srbchannel* sr) {
do {
#ifdef DEBUG_SRBCHANNEL
int q;
pa_ringbuffer_peek(&sr->rb_read, &q);
pa_log("In rw loop from srbchannel, before callback, count = %d", q);
#endif
if (sr->callback) {
if (!sr->callback(sr, sr->cb_userdata)) {
#ifdef DEBUG_SRBCHANNEL
pa_log("Aborting read loop from srbchannel");
#endif
return;
}
}
#ifdef DEBUG_SRBCHANNEL
pa_ringbuffer_peek(&sr->rb_read, &q);
pa_log("In rw loop from srbchannel, after callback, count = %d", q);
#endif
} while (pa_fdsem_before_poll(sr->sem_read) < 0);
}
