server: add async io support

The new _ASYNC io's in qxl_dev listed at the end get six new api
functions, and an additional callback function "async_complete". When
the async version of a specific io is used, completion is notified by
calling async_complete, and no READY message is written or expected by
the dispatcher.

update_area has been changed to push QXLRects to the worker thread, where
the conversion to SpiceRect takes place.

A cookie has been added to each async call to QXLWorker, and is passed back via
async_complete.

Added api:

QXLWorker:
    update_area_async
    add_memslot_async
    destroy_surfaces_async
    destroy_primary_surface_async
    create_primary_surface_async
    destroy_surface_wait_async

QXLInterface:
    async_complete

1 files changed, 1 insertions, 1 deletions

diff --git a/server/red_parse_qxl.h b/server/red_parse_qxl.h
index 5de03256..a713dcfb 100644
--- a/server/red_parse_qxl.h
+++ b/server/red_parse_qxl.h
@@ -110,7 +110,7 @@ typedef struct RedCursorCmd {
     uint8_t *device_data;
 } RedCursorCmd;
 
-void red_get_rect_ptr(SpiceRect *red, QXLRect *qxl);
+void red_get_rect_ptr(SpiceRect *red, const QXLRect *qxl);
 
 void red_get_drawable(RedMemSlotInfo *slots, int group_id,
                       RedDrawable *red, QXLPHYSICAL addr, uint32_t flags);