[PATCH 03/12] Remove make_bpstat_clear_actions_cleanup

[Tom Tromey <tom at tromey dot com>]

This removes make_bpstat_clear_actions_cleanup, replacing it with uses
of cleanup_function.

gdb/ChangeLog
2019-01-08  Tom Tromey  <tom@tromey.com>

	* infrun.c (fetch_inferior_event): Use cleanup_function.
	* utils.h (make_bpstat_clear_actions_cleanup): Don't declare.
	* top.c (execute_command): Use cleanup_function.
	* breakpoint.c (bpstat_do_actions): Use cleanup_function.
	* utils.c (do_bpstat_clear_actions_cleanup)
	(make_bpstat_clear_actions_cleanup): Remove.
---
 gdb/ChangeLog    |  9 +++++++++
 gdb/breakpoint.c |  4 ++--
 gdb/infrun.c     | 10 ++++++----
 gdb/top.c        |  8 ++++----
 gdb/utils.c      | 17 -----------------
 gdb/utils.h      |  1 -
 6 files changed, 21 insertions(+), 28 deletions(-)

diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
index 3acb5145b9..4726e452a6 100644
--- a/gdb/breakpoint.c
+++ b/gdb/breakpoint.c
@@ -4474,7 +4474,7 @@ get_bpstat_thread ()
 void
 bpstat_do_actions (void)
 {
-  struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup ();
+  cleanup_function cleanup_if_error (bpstat_clear_actions);
   thread_info *tp;
 
   /* Do any commands attached to breakpoint we are stopped at.  */
@@ -4488,7 +4488,7 @@ bpstat_do_actions (void)
 	break;
     }
 
-  discard_cleanups (cleanup_if_error);
+  cleanup_if_error.cancel ();
 }
 
 /* Print out the (old or new) value associated with a watchpoint.  */
diff --git a/gdb/infrun.c b/gdb/infrun.c
index 150288264f..d84ed10b61 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -67,6 +67,7 @@
 #include "progspace-and-thread.h"
 #include "common/gdb_optional.h"
 #include "arch-utils.h"
+#include "common/cleanup-function.h"
 
 /* Prototypes for local functions */
 
@@ -3758,9 +3759,9 @@ fetch_inferior_event (void *client_data)
 
   /* Get executed before make_cleanup_restore_current_thread above to apply
      still for the thread which has thrown the exception.  */
-  struct cleanup *ts_old_chain = make_bpstat_clear_actions_cleanup ();
-
-  make_cleanup (delete_just_stopped_threads_infrun_breakpoints_cleanup, NULL);
+  cleanup_function defer_bpstat_clear (bpstat_clear_actions);
+  cleanup_function defer_delete_threads
+    (delete_just_stopped_threads_infrun_breakpoints);
 
   /* Now figure out what to do with the result of the result.  */
   handle_inferior_event (ecs);
@@ -3813,7 +3814,8 @@ fetch_inferior_event (void *client_data)
 	}
     }
 
-  discard_cleanups (ts_old_chain);
+  defer_delete_threads.cancel ();
+  defer_bpstat_clear.cancel ();
 
   /* No error, don't finish the thread states yet.  */
   finish_state.release ();
diff --git a/gdb/top.c b/gdb/top.c
index 900e78aaec..06911a110f 100644
--- a/gdb/top.c
+++ b/gdb/top.c
@@ -52,6 +52,7 @@
 #include "frame.h"
 #include "buffer.h"
 #include "gdb_select.h"
+#include "common/cleanup-function.h"
 
 /* readline include files.  */
 #include "readline/readline.h"
@@ -539,12 +540,11 @@ set_repeat_arguments (const char *args)
 void
 execute_command (const char *p, int from_tty)
 {
-  struct cleanup *cleanup_if_error;
   struct cmd_list_element *c;
   const char *line;
   const char *cmd_start = p;
 
-  cleanup_if_error = make_bpstat_clear_actions_cleanup ();
+  cleanup_function cleanup_if_error (bpstat_clear_actions);
   scoped_value_mark cleanup = prepare_execute_command ();
 
   /* Force cleanup of any alloca areas if using C alloca instead of
@@ -554,7 +554,7 @@ execute_command (const char *p, int from_tty)
   /* This can happen when command_line_input hits end of file.  */
   if (p == NULL)
     {
-      discard_cleanups (cleanup_if_error);
+      cleanup_if_error.cancel ();
       return;
     }
 
@@ -649,7 +649,7 @@ execute_command (const char *p, int from_tty)
   if (has_stack_frames () && inferior_thread ()->state != THREAD_RUNNING)
     check_frame_language_change ();
 
-  discard_cleanups (cleanup_if_error);
+  cleanup_if_error.cancel ();
 }
 
 /* Run execute_command for P and FROM_TTY.  Capture its output into the
diff --git a/gdb/utils.c b/gdb/utils.c
index ed8d60fa7b..4af75e3480 100644
--- a/gdb/utils.c
+++ b/gdb/utils.c
@@ -3057,23 +3057,6 @@ parse_pid_to_attach (const char *args)
   return pid;
 }
 
-/* Helper for make_bpstat_clear_actions_cleanup.  */
-
-static void
-do_bpstat_clear_actions_cleanup (void *unused)
-{
-  bpstat_clear_actions ();
-}
-
-/* Call bpstat_clear_actions for the case an exception is throw.  You should
-   discard_cleanups if no exception is caught.  */
-
-struct cleanup *
-make_bpstat_clear_actions_cleanup (void)
-{
-  return make_cleanup (do_bpstat_clear_actions_cleanup, NULL);
-}
-
 /* Substitute all occurences of string FROM by string TO in *STRINGP.  *STRINGP
    must come from xrealloc-compatible allocator and it may be updated.  FROM
    needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be
diff --git a/gdb/utils.h b/gdb/utils.h
index f2fe1da832..896feb973c 100644
--- a/gdb/utils.h
+++ b/gdb/utils.h
@@ -286,7 +286,6 @@ private:
   int m_save_batch_flag;
 };
 
-extern struct cleanup *make_bpstat_clear_actions_cleanup (void);
 
 /* Path utilities.  */
 
-- 
2.17.2