Upstream: Misc integration - includes qobject.h and related sources

Change-Id: Idfa93ab5c67c95a3bc1869eeaf3a84a75fe24cd6
diff --git a/qemu-aio.h b/qemu-aio.h
index f262344..c49bef7 100644
--- a/qemu-aio.h
+++ b/qemu-aio.h
@@ -20,6 +20,11 @@
 /* Returns 1 if there are still outstanding AIO requests; 0 otherwise */
 typedef int (AioFlushHandler)(void *opaque);
 
+/* Runs all currently allowed AIO callbacks of completed requests in the
+ * respective AIO backend. Returns 0 if no requests was handled, non-zero
+ * if at least one queued request was handled. */
+typedef int (AioProcessQueue)(void *opaque);
+
 /* Flush any pending AIO operation. This function will block until all
  * outstanding AIO operations have been completed or cancelled. */
 void qemu_aio_flush(void);