ret = sin->pos.parent.event_cb(&sin->pos.parent, &sin->parent);
if (ret == EOF)
return EOF;
+ else if (ret == EAGAIN)
+ /* Stream is inactive for now (live reading). */
+ return EAGAIN;
else if (ret) {
fprintf(stderr, "[error] Reading event failed.\n");
return ret;
if (ret == EOF) {
ret = 0;
continue;
- } else if (ret) {
+ } else if (ret != 0 && ret != EAGAIN) {
goto error;
}
/* Add to heap */
assert(removed == file_stream);
ret = 0;
goto end;
+ } else if (ret == EAGAIN) {
+ /*
+ * The stream is inactive for now, we just updated the timestamp_end
+ * to skip over this stream up to a certain point in time.
+ */
+ goto reinsert;
} else if (ret) {
goto end;
}
+
+reinsert:
/* Reinsert the file stream into the heap, and rebalance. */
removed = bt_heap_replace_max(iter->stream_heap, file_stream);
assert(removed == file_stream);
+ file_stream = bt_heap_maximum(iter->stream_heap);
+ if (file_stream->pos.content_size == 0) {
+ ret = EAGAIN;
+ } else {
+ ret = 0;
+ }
+
end:
return ret;
}