Fix race conditions when calculating Haiku frame geometry

* src/haiku_support.cc (be_lock_window, be_unlock_window): New
functions.
* src/haiku_support.h: Update prototypes.

* src/haikufns.c (frame_geometry): Lock window before asking for
its dimensions and frame.

1 files changed, 17 insertions, 0 deletions

diff --git a/src/haiku_support.cc b/src/haiku_support.cc
index 28c86085847..0c126dab3d6 100644
--- a/src/haiku_support.cc
+++ b/src/haiku_support.cc
@@ -5163,3 +5163,20 @@ be_send_move_frame_event (void *window)
 
   msg.SendMessage (SEND_MOVE_FRAME_EVENT);
 }
+
+void
+be_lock_window (void *window)
+{
+  BWindow *wnd = (BWindow *) window;
+
+  if (!wnd->LockLooper ())
+    gui_abort ("Failed to lock window looper");
+}
+
+void
+be_unlock_window (void *window)
+{
+  BWindow *wnd = (BWindow *) window;
+
+  wnd->UnlockLooper ();
+}