Discard killed buffers from deleted window and frame objects.

This reduces an amount of references to killed buffers and
helps GC to reclaim them faster.
* alloc.c (discard_killed_buffers): New function.
(mark_object): Use it for deleted windows and frames.
(mark_object): If symbol's value is set up for a killed buffer
or deleted frame, restore it's global binding.
* data.c (swap_in_global_binding): Add GC notice.
(swap_in_symval_forwarding): Use convenient set_blv_where.
* window.c (wset_next_buffers, wset_prev_buffers): Move ...
* window.h: ... to here.

1 files changed, 0 insertions, 10 deletions

diff --git a/src/window.c b/src/window.c
index 4a833a120b3..18a550782e8 100644
--- a/src/window.c
+++ b/src/window.c
@@ -176,11 +176,6 @@ wset_new_total (struct window *w, Lisp_Object val)
   w->new_total = val;
 }
 static inline void
-wset_next_buffers (struct window *w, Lisp_Object val)
-{
-  w->next_buffers = val;
-}
-static inline void
 wset_normal_cols (struct window *w, Lisp_Object val)
 {
   w->normal_cols = val;
@@ -201,11 +196,6 @@ wset_pointm (struct window *w, Lisp_Object val)
   w->pointm = val;
 }
 static inline void
-wset_prev_buffers (struct window *w, Lisp_Object val)
-{
-  w->prev_buffers = val;
-}
-static inline void
 wset_right_fringe_width (struct window *w, Lisp_Object val)
 {
   w->right_fringe_width = val;