[PATCH 13/14] Convert breakpoint.c to type-safe registry API

[Tom Tromey <tom at tromey dot com>]

This changes breakpoint.c to use the type-safe registry API.

gdb/ChangeLog
2019-04-22  Tom Tromey  <tom@tromey.com>

	* breakpoint.c (breakpoint_objfile_key): Change type.
	(get_breakpoint_objfile_data): Update.
	(free_breakpoint_objfile_data): Remove.
	(_initialize_breakpoint): Update.
---
 gdb/ChangeLog    |  7 +++++++
 gdb/breakpoint.c | 23 ++++-------------------
 2 files changed, 11 insertions(+), 19 deletions(-)

diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
index 3047ef3827d..6097b62e81f 100644
--- a/gdb/breakpoint.c
+++ b/gdb/breakpoint.c
@@ -3156,7 +3156,8 @@ struct breakpoint_objfile_data
   std::vector<probe *> exception_probes;
 };
 
-static const struct objfile_data *breakpoint_objfile_key;
+static const struct objfile_key<breakpoint_objfile_data>
+  breakpoint_objfile_key;
 
 /* Minimal symbol not found sentinel.  */
 static struct minimal_symbol msym_not_found;
@@ -3177,25 +3178,12 @@ get_breakpoint_objfile_data (struct objfile *objfile)
 {
   struct breakpoint_objfile_data *bp_objfile_data;
 
-  bp_objfile_data = ((struct breakpoint_objfile_data *)
-		     objfile_data (objfile, breakpoint_objfile_key));
+  bp_objfile_data = breakpoint_objfile_key.get (objfile);
   if (bp_objfile_data == NULL)
-    {
-      bp_objfile_data = new breakpoint_objfile_data ();
-      set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data);
-    }
+    bp_objfile_data = breakpoint_objfile_key.emplace (objfile);
   return bp_objfile_data;
 }
 
-static void
-free_breakpoint_objfile_data (struct objfile *obj, void *data)
-{
-  struct breakpoint_objfile_data *bp_objfile_data
-    = (struct breakpoint_objfile_data *) data;
-
-  delete bp_objfile_data;
-}
-
 static void
 create_overlay_event_breakpoint (void)
 {
@@ -15448,9 +15436,6 @@ _initialize_breakpoint (void)
   gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile);
   gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change);
 
-  breakpoint_objfile_key
-    = register_objfile_data_with_cleanup (NULL, free_breakpoint_objfile_data);
-
   breakpoint_chain = 0;
   /* Don't bother to call set_breakpoint_count.  $bpnum isn't useful
      before a breakpoint is set.  */
-- 
2.17.2