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authorMarc-André Lureau <marcandre.lureau@redhat.com>2021-03-11 11:45:33 +0400
committerMarc-André Lureau <marcandre.lureau@redhat.com>2021-12-21 10:50:21 +0400
commita4ddc31417199eab96211b254097a0a0869d5bea (patch)
tree8789895c3beaa87e7442b27e415adc5542762de1 /ui/console.c
parentac32b2fff127843355b4f7e7ac9f93dd4a395adf (diff)
downloadfocaccia-qemu-a4ddc31417199eab96211b254097a0a0869d5bea.tar.gz
focaccia-qemu-a4ddc31417199eab96211b254097a0a0869d5bea.zip
ui: make gl_block use a counter
Track multiple callers blocking requests.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'ui/console.c')
-rw-r--r--ui/console.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/ui/console.c b/ui/console.c
index 87f897e46d..39f7b66baf 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -79,7 +79,7 @@ struct QemuConsole {
     DisplaySurface *surface;
     int dcls;
     DisplayChangeListener *gl;
-    bool gl_block;
+    int gl_block;
     int window_id;
 
     /* Graphic console state.  */
@@ -237,10 +237,19 @@ void graphic_hw_gl_block(QemuConsole *con, bool block)
 {
     assert(con != NULL);
 
-    con->gl_block = block;
-    if (con->hw_ops->gl_block) {
-        con->hw_ops->gl_block(con->hw, block);
+    if (block) {
+        con->gl_block++;
+    } else {
+        con->gl_block--;
+    }
+    assert(con->gl_block >= 0);
+    if (!con->hw_ops->gl_block) {
+        return;
+    }
+    if ((block && con->gl_block != 1) || (!block && con->gl_block != 0)) {
+        return;
     }
+    con->hw_ops->gl_block(con->hw, block);
 }
 
 void graphic_hw_gl_flushed(QemuConsole *con)