Remove make_cleanup_restore_current_ui

This removes make_cleanup_restore_current_ui by converting the last
use.  The last use was in a few functions used to iterate over all
UIs.  This patch replaces these functions with a class, and arranges
for the class destructor to do the needed cleanup.

2016-10-21  Tom Tromey  <tom@tromey.com>

	* tui/tui-interp.c (tui_on_normal_stop, tui_on_signal_received)
	(tui_on_end_stepping_range, tui_on_signal_exited, tui_on_exited)
	(tui_on_no_history, tui_on_user_selected_context_changed):
	Update.
	* top.h (switch_thru_all_uis): New class.
	(SWITCH_THRU_ALL_UIS): Rewrite.
	(make_cleanup_restore_current_ui, switch_thru_all_uis_init)
	(switch_thru_all_uis_cond, switch_thru_all_uis_next): Don't
	declare.
	* mi/mi-interp.c (mi_new_thread, mi_thread_exit)
	(mi_record_changed, mi_inferior_added, mi_inferior_appeared)
	(mi_inferior_exit, mi_inferior_removed, mi_on_signal_received)
	(mi_on_end_stepping_range, mi_on_signal_exited, mi_on_exited)
	(mi_on_no_history, mi_on_normal_stop, mi_traceframe_changed)
	(mi_tsv_created, mi_tsv_deleted, mi_tsv_modified)
	(mi_breakpoint_created, mi_breakpoint_deleted)
	(mi_breakpoint_modified, mi_output_running_pid, mi_on_resume)
	(mi_solib_loaded, mi_solib_unloaded, mi_command_param_changed)
	(mi_memory_changed, mi_user_selected_context_changed): Update.
	* infrun.c (all_uis_check_sync_execution_done)
	(all_uis_on_sync_execution_starting, normal_stop): Update.
	* event-top.c (restore_ui_cleanup)
	(make_cleanup_restore_current_ui, switch_thru_all_uis_init)
	(switch_thru_all_uis_cond, switch_thru_all_uis_next): Remove.
	* cli/cli-interp.c (cli_on_normal_stop, cli_on_signal_received)
	(cli_on_end_stepping_range, cli_on_signal_exited, cli_on_exited)
	(cli_on_no_history, cli_on_user_selected_context_changed):
	Update.
	* breakpoint.c (watchpoint_check): Update.

1 files changed, 7 insertions, 20 deletions

diff --git a/gdb/tui/tui-interp.c b/gdb/tui/tui-interp.c
index e06d679a311..8d35124a995 100644
--- a/gdb/tui/tui-interp.c
+++ b/gdb/tui/tui-interp.c
@@ -70,12 +70,10 @@ tui_exit (void)
 static void
 tui_on_normal_stop (struct bpstats *bs, int print_frame)
 {
-  struct switch_thru_all_uis state;
-
   if (!print_frame)
     return;
 
-  SWITCH_THRU_ALL_UIS (state)
+  SWITCH_THRU_ALL_UIS ()
     {
       struct interp *interp = top_level_interpreter ();
       struct interp *tui = as_tui_interp (interp);
@@ -95,9 +93,7 @@ tui_on_normal_stop (struct bpstats *bs, int print_frame)
 static void
 tui_on_signal_received (enum gdb_signal siggnal)
 {
-  struct switch_thru_all_uis state;
-
-  SWITCH_THRU_ALL_UIS (state)
+  SWITCH_THRU_ALL_UIS ()
     {
       struct interp *tui = as_tui_interp (top_level_interpreter ());
 
@@ -113,9 +109,7 @@ tui_on_signal_received (enum gdb_signal siggnal)
 static void
 tui_on_end_stepping_range (void)
 {
-  struct switch_thru_all_uis state;
-
-  SWITCH_THRU_ALL_UIS (state)
+  SWITCH_THRU_ALL_UIS ()
     {
       struct interp *tui = as_tui_interp (top_level_interpreter ());
 
@@ -131,9 +125,7 @@ tui_on_end_stepping_range (void)
 static void
 tui_on_signal_exited (enum gdb_signal siggnal)
 {
-  struct switch_thru_all_uis state;
-
-  SWITCH_THRU_ALL_UIS (state)
+  SWITCH_THRU_ALL_UIS ()
     {
       struct interp *tui = as_tui_interp (top_level_interpreter ());
 
@@ -149,9 +141,7 @@ tui_on_signal_exited (enum gdb_signal siggnal)
 static void
 tui_on_exited (int exitstatus)
 {
-  struct switch_thru_all_uis state;
-
-  SWITCH_THRU_ALL_UIS (state)
+  SWITCH_THRU_ALL_UIS ()
     {
       struct interp *tui = as_tui_interp (top_level_interpreter ());
 
@@ -167,9 +157,7 @@ tui_on_exited (int exitstatus)
 static void
 tui_on_no_history (void)
 {
-  struct switch_thru_all_uis state;
-
-  SWITCH_THRU_ALL_UIS (state)
+  SWITCH_THRU_ALL_UIS ()
     {
       struct interp *tui = as_tui_interp (top_level_interpreter ());
 
@@ -211,7 +199,6 @@ tui_on_command_error (void)
 static void
 tui_on_user_selected_context_changed (user_selected_what selection)
 {
-  struct switch_thru_all_uis state;
   struct thread_info *tp;
 
   /* This event is suppressed.  */
@@ -220,7 +207,7 @@ tui_on_user_selected_context_changed (user_selected_what selection)
 
   tp = find_thread_ptid (inferior_ptid);
 
-  SWITCH_THRU_ALL_UIS (state)
+  SWITCH_THRU_ALL_UIS ()
     {
       struct interp *tui = as_tui_interp (top_level_interpreter ());