[PATCH master+7.12 v2 1/3] Introduce cleanup to restore current_uiout

[Simon Marchi <simon.marchi@ericsson.com>]

Make a globally available cleanup from a pre-existing one in infrun.c.
This is used in the following patch.

gdb/ChangeLog:

	* infrun.c (restore_current_uiout_cleanup): Move to ui-out.c.
	(print_stop_event): Use make_cleanup_restore_current_uiout.
	* ui-out.c (restore_current_uiout_cleanup): Move from infrun.c.
	(make_cleanup_restore_current_uiout): New function definition.
	* ui-out.h (make_cleanup_restore_current_uiout): New function
	definition.
---
 gdb/infrun.c | 12 +-----------
 gdb/ui-out.c | 18 ++++++++++++++++++
 gdb/ui-out.h |  4 ++++
 3 files changed, 23 insertions(+), 11 deletions(-)

diff --git a/gdb/infrun.c b/gdb/infrun.c
index 70d7a09..ec37ca1 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -8096,16 +8096,6 @@ print_stop_location (struct target_waitstatus *ws)
     print_stack_frame (get_selected_frame (NULL), 0, source_flag, 1);
 }
 
-/* Cleanup that restores a previous current uiout.  */
-
-static void
-restore_current_uiout_cleanup (void *arg)
-{
-  struct ui_out *saved_uiout = (struct ui_out *) arg;
-
-  current_uiout = saved_uiout;
-}
-
 /* See infrun.h.  */
 
 void
@@ -8118,7 +8108,7 @@ print_stop_event (struct ui_out *uiout)
 
   get_last_target_status (&last_ptid, &last);
 
-  old_chain = make_cleanup (restore_current_uiout_cleanup, current_uiout);
+  old_chain = make_cleanup_restore_current_uiout ();
   current_uiout = uiout;
 
   print_stop_location (&last);
diff --git a/gdb/ui-out.c b/gdb/ui-out.c
index 3972a56..ec44ab6 100644
--- a/gdb/ui-out.c
+++ b/gdb/ui-out.c
@@ -953,6 +953,24 @@ ui_out_destroy (struct ui_out *uiout)
   xfree (uiout);
 }
 
+/* Cleanup that restores a previous current uiout.  */
+
+static void
+restore_current_uiout_cleanup (void *arg)
+{
+  struct ui_out *saved_uiout = (struct ui_out *) arg;
+
+  current_uiout = saved_uiout;
+}
+
+/* See ui-out.h.  */
+
+struct cleanup *
+make_cleanup_restore_current_uiout (void)
+{
+  return make_cleanup (restore_current_uiout_cleanup, current_uiout);
+}
+
 /* Standard gdb initialization hook.  */
 
 void
diff --git a/gdb/ui-out.h b/gdb/ui-out.h
index 9e1e74d..6a4d78a 100644
--- a/gdb/ui-out.h
+++ b/gdb/ui-out.h
@@ -247,4 +247,8 @@ extern void ui_out_destroy (struct ui_out *uiout);
 
 extern int ui_out_redirect (struct ui_out *uiout, struct ui_file *outstream);
 
+/* Make a cleanup that restores the previous current uiout.  */
+
+extern struct cleanup *make_cleanup_restore_current_uiout (void);
+
 #endif /* UI_OUT_H */
-- 
2.9.3