[PATCH v2 3/8] ui: Add a helper to wait on a dmabuf sync object

[Vivek Kasireddy <vivek.kasireddy@intel.com>]

This will be called by virtio-gpu in the subsequent patches.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
---
 include/ui/console.h |  5 +++++
 ui/console.c         | 10 ++++++++++
 2 files changed, 15 insertions(+)

diff --git a/include/ui/console.h b/include/ui/console.h
index 49978fdae3..a89f739f10 100644
--- a/include/ui/console.h
+++ b/include/ui/console.h
@@ -242,6 +242,9 @@ typedef struct DisplayChangeListenerOps {
     /* optional */
     void (*dpy_gl_release_dmabuf)(DisplayChangeListener *dcl,
                                   QemuDmaBuf *dmabuf);
+    /* optional */
+    void (*dpy_gl_wait_dmabuf)(DisplayChangeListener *dcl,
+                               QemuDmaBuf *dmabuf);
     /* required if GL */
     void (*dpy_gl_update)(DisplayChangeListener *dcl,
                           uint32_t x, uint32_t y, uint32_t w, uint32_t h);
@@ -314,6 +317,8 @@ void dpy_gl_cursor_position(QemuConsole *con,
                             uint32_t pos_x, uint32_t pos_y);
 void dpy_gl_release_dmabuf(QemuConsole *con,
                            QemuDmaBuf *dmabuf);
+void dpy_gl_wait_dmabuf(QemuConsole *con,
+                        QemuDmaBuf *dmabuf);
 void dpy_gl_update(QemuConsole *con,
                    uint32_t x, uint32_t y, uint32_t w, uint32_t h);
 
diff --git a/ui/console.c b/ui/console.c
index 2de5f4105b..b0abfd2246 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -1917,6 +1917,16 @@ void dpy_gl_release_dmabuf(QemuConsole *con,
     }
 }
 
+void dpy_gl_wait_dmabuf(QemuConsole *con,
+                        QemuDmaBuf *dmabuf)
+{
+    assert(con->gl);
+
+    if (con->gl->ops->dpy_gl_wait_dmabuf) {
+        con->gl->ops->dpy_gl_wait_dmabuf(con->gl, dmabuf);
+    }
+}
+
 void dpy_gl_update(QemuConsole *con,
                    uint32_t x, uint32_t y, uint32_t w, uint32_t h)
 {
-- 
2.30.2