[21/24] console: graphic_hw_update return true if async

diff --git a/hw/display/qxl-render.c b/hw/display/qxl-render.c
index 9ad9d9e..50a0191 100644
--- a/hw/display/qxl-render.c
+++ b/hw/display/qxl-render.c
@@ -163,7 +163,7 @@  static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl)
  * callbacks are called by spice_server thread, deferring to bh called from the
  * io thread.
  */
-void qxl_render_update(PCIQXLDevice *qxl)
+bool qxl_render_update(PCIQXLDevice *qxl)
 {
     QXLCookie *cookie;
 
@@ -172,7 +172,7 @@  void qxl_render_update(PCIQXLDevice *qxl)
     if (!runstate_is_running() || !qxl->guest_primary.commands) {
         qxl_render_update_area_unlocked(qxl);
         qemu_mutex_unlock(&qxl->ssd.lock);
-        return;
+        return false;
     }
 
     qxl->guest_primary.commands = 0;
@@ -183,6 +183,7 @@  void qxl_render_update(PCIQXLDevice *qxl)
     qxl_set_rect_to_surface(qxl, &cookie->u.render.area);
     qxl_spice_update_area(qxl, 0, &cookie->u.render.area, NULL,
                           0, 1 /* clear_dirty_region */, QXL_ASYNC, cookie);
+    return true;
 }
 
 void qxl_render_update_area_bh(void *opaque)
diff --git a/hw/display/qxl.c b/hw/display/qxl.c
index 0e2682d..7dc08ca 100644
--- a/hw/display/qxl.c
+++ b/hw/display/qxl.c
@@ -134,7 +134,7 @@  static void qxl_reset_memslots(PCIQXLDevice *d);
 static void qxl_reset_surfaces(PCIQXLDevice *d);
 static void qxl_ring_set_dirty(PCIQXLDevice *qxl);
 
-static void qxl_hw_update(void *opaque);
+static bool qxl_hw_update_async(void *opaque);
 
 void qxl_set_guest_bug(PCIQXLDevice *qxl, const char *msg, ...)
 {
@@ -1091,7 +1091,7 @@  static const QXLInterface qxl_interface = {
 };
 
 static const GraphicHwOps qxl_ops = {
-    .gfx_update  = qxl_hw_update,
+    .gfx_update_async = qxl_hw_update_async,
 };
 
 static void qxl_enter_vga_mode(PCIQXLDevice *d)
@@ -1806,11 +1806,11 @@  static void qxl_send_events(PCIQXLDevice *d, uint32_t events)
 
 /* graphics console */
 
-static void qxl_hw_update(void *opaque)
+static bool qxl_hw_update_async(void *opaque)
 {
     PCIQXLDevice *qxl = opaque;
 
-    qxl_render_update(qxl);
+    return qxl_render_update(qxl);
 }
 
 static void qxl_dirty_one_surface(PCIQXLDevice *qxl, QXLPHYSICAL pqxl,
diff --git a/ui/console.c b/ui/console.c
index fa3e658..392d7c7 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -253,14 +253,24 @@  static void gui_setup_refresh(DisplayState *ds)
     ds->have_text = have_text;
 }
 
-void graphic_hw_update(QemuConsole *con)
+bool graphic_hw_update(QemuConsole *con)
 {
     if (!con) {
         con = active_console;
     }
-    if (con && con->hw_ops->gfx_update) {
+
+    if (!con) {
+        return false;
+    }
+
+    if (con->hw_ops->gfx_update_async) {
+        return con->hw_ops->gfx_update_async(con->hw);
+    } else if (con->hw_ops->gfx_update) {
         con->hw_ops->gfx_update(con->hw);
+        return false;
     }
+
+    return false;
 }
 
 void graphic_hw_gl_block(QemuConsole *con, bool block)
diff --git a/hw/display/qxl.h b/hw/display/qxl.h
index d2d49dd..7ac31fc 100644
--- a/hw/display/qxl.h
+++ b/hw/display/qxl.h
@@ -167,7 +167,7 @@  int qxl_log_command(PCIQXLDevice *qxl, const char *ring, QXLCommandExt *ext);
 
 /* qxl-render.c */
 void qxl_render_resize(PCIQXLDevice *qxl);
-void qxl_render_update(PCIQXLDevice *qxl);
+bool qxl_render_update(PCIQXLDevice *qxl);
 int qxl_render_cursor(PCIQXLDevice *qxl, QXLCommandExt *ext);
 void qxl_render_update_area_done(PCIQXLDevice *qxl, QXLCookie *cookie);
 void qxl_render_update_area_bh(void *opaque);
diff --git a/include/ui/console.h b/include/ui/console.h
index e2589e2..772b9db 100644
--- a/include/ui/console.h
+++ b/include/ui/console.h
@@ -362,6 +362,7 @@  static inline void console_write_ch(console_ch_t *dest, uint32_t ch)
 typedef struct GraphicHwOps {
     void (*invalidate)(void *opaque);
     void (*gfx_update)(void *opaque);
+    bool (*gfx_update_async)(void *opaque);
     void (*text_update)(void *opaque, console_ch_t *text);
     void (*update_interval)(void *opaque, uint64_t interval);
     int (*ui_info)(void *opaque, uint32_t head, QemuUIInfo *info);
@@ -375,7 +376,7 @@  void graphic_console_set_hwops(QemuConsole *con,
                                const GraphicHwOps *hw_ops,
                                void *opaque);
 
-void graphic_hw_update(QemuConsole *con);
+bool graphic_hw_update(QemuConsole *con);
 void graphic_hw_invalidate(QemuConsole *con);
 void graphic_hw_text_update(QemuConsole *con, console_ch_t *chardata);
 void graphic_hw_gl_block(QemuConsole *con, bool block);