Avoid looping over all frame windows to freeze and unfreeze.

* window.h (struct window): Drop frozen_window_start_p.
(freeze_window_starts): Drop prototype.
* frame.h (struct frame): New frozen_window_starts flag.
(FRAME_WINDOWS_FROZEN): New macro.
* window.c (freeze_window_start, freeze_window_starts):
Remove.
(select_window, replace_window): Adjust users.
* xdisp.c (resize_mini_window): Use FRAME_WINDOWS_FROZEN.
(window_frozen_p): New function.
(redisplay_window): Use it.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/frame.h b/src/frame.h
index 33e4bb71d7..e44003b15c 100644
--- a/src/frame.h
+++ b/src/frame.h
@@ -410,6 +410,10 @@ struct frame
   /* Nonzero means that the pointer is invisible. */
   unsigned pointer_invisible :1;
 
+  /* Nonzero means that all windows except mini-window and
+     selected window on this frame have frozen window starts.  */
+  unsigned frozen_window_starts : 1;
+
   /* Nonzero if we should actually display the scroll bars on this frame.  */
   enum vertical_scroll_bar_type vertical_scroll_bar_type;
 
@@ -761,6 +765,10 @@ default_pixels_per_inch_y (void)
 /* Not really implemented.  */
 #define FRAME_WANTS_MODELINE_P(f) (f)->wants_modeline
 
+/* Nonzero if all windows except selected window and mini window
+   are frozen on frame F.  */
+#define FRAME_WINDOWS_FROZEN(f) (f)->frozen_window_starts
+
 /* Nonzero if a size change has been requested for frame F
    but not yet really put into effect.  This can be true temporarily
    when an X event comes in at a bad time.  */