Change all_objfiles_safe adapter to be a method on program_space

This changes the all_objfiles_safe range adapter to be a method on the
program space, and fixes up all the users.

gdb/ChangeLog
2019-01-15  Tom Tromey  <tom@tromey.com>

	* progspace.h (program_space) <objfiles_safe_range>: New
	typedef.
	<objfiles_safe>: New method.
	* objfiles.h (class all_objfiles_safe): Remove.
	* objfiles.c (free_all_objfiles, objfile_purge_solibs): Update.
	* jit.c (jit_inferior_exit_hook): Update.

gdb/ChangeLog

@@ -1,3 +1,12 @@
+2019-01-15  Tom Tromey  <tom@tromey.com>
+
+	* progspace.h (program_space) <objfiles_safe_range>: New
+	typedef.
+	<objfiles_safe>: New method.
+	* objfiles.h (class all_objfiles_safe): Remove.
+	* objfiles.c (free_all_objfiles, objfile_purge_solibs): Update.
+	* jit.c (jit_inferior_exit_hook): Update.
+
 2019-01-17  Tom Tromey  <tom@tromey.com>
 
 	* progspace.h (program_space) <objfiles_range>: New typedef.
@@ -1114,7 +1123,7 @@
 
 	Update copyright year range in all GDB files.
 
-2019-01-01  Joel Brobecker  <brobecker@adacore.com>
+2019-01-01, 19  Joel Brobecker  <brobecker@adacore.com>
 
 	* config/djgpp/fnchange.lst: Add entry for gdb/ChangeLog-2018.
 

gdb/jit.c

@@ -1391,7 +1391,7 @@ jit_breakpoint_re_set (void)
 static void
 jit_inferior_exit_hook (struct inferior *inf)
 {
-  for (objfile *objf : all_objfiles_safe (current_program_space))
+  for (objfile *objf : current_program_space->objfiles_safe ())
     {
       struct jit_objfile_data *objf_data
 	= (struct jit_objfile_data *) objfile_data (objf, jit_objfile_data);

gdb/objfiles.c

@@ -514,7 +514,7 @@ objfile_separate_debug_iterate (const struct objfile *parent,
 
 /* Put one object file before a specified on in the global list.
    This can be used to make sure an object file is destroyed before
-   another when using all_objfiles_safe to free all objfiles.  */
+   another when using objfiles_safe to free all objfiles.  */
 void
 put_objfile_before (struct objfile *objfile, struct objfile *before_this)
 {
@@ -587,7 +587,7 @@ add_separate_debug_objfile (struct objfile *objfile, struct objfile *parent)
   parent->separate_debug_objfile = objfile;
 
   /* Put the separate debug object before the normal one, this is so that
-     usage of all_objfiles_safe will stay safe.  */
+     usage of objfiles_safe will stay safe.  */
   put_objfile_before (objfile, parent);
 }
 
@@ -735,7 +735,7 @@ free_all_objfiles (void)
   for (so = master_so_list (); so; so = so->next)
     gdb_assert (so->objfile == NULL);
 
-  for (objfile *objfile : all_objfiles_safe (current_program_space))
+  for (objfile *objfile : current_program_space->objfiles_safe ())
     delete objfile;
   clear_symtab_users (0);
 }
@@ -1044,7 +1044,7 @@ have_full_symbols (void)
 void
 objfile_purge_solibs (void)
 {
-  for (objfile *objf : all_objfiles_safe (current_program_space))
+  for (objfile *objf : current_program_space->objfiles_safe ())
     {
       /* We assume that the solib package has been purged already, or will
 	 be soon.  */

gdb/objfiles.h

@@ -553,28 +553,6 @@ extern void default_iterate_over_objfiles_in_search_order
    void *cb_data, struct objfile *current_objfile);
 
 
-/* An iterarable object that can be used to iterate over all
-   objfiles.  The basic use is in a foreach, like:
-
-   for (objfile *objf : all_objfiles_safe (pspace)) { ... }
-
-   This variant uses a basic_safe_iterator so that objfiles can be
-   deleted during iteration.  */
-
-class all_objfiles_safe
-  : public next_adapter<struct objfile,
-			basic_safe_iterator<next_iterator<objfile>>>
-{
-public:
-
-  explicit all_objfiles_safe (struct program_space *pspace)
-    : next_adapter<struct objfile,
-		   basic_safe_iterator<next_iterator<objfile>>>
-        (pspace->objfiles_head)
-  {
-  }
-};
-
 /* A range adapter that makes it possible to iterate over all
    compunits in one objfile.  */
 

gdb/progspace.h

@@ -26,6 +26,8 @@
 #include "gdb_bfd.h"
 #include "gdb_vecs.h"
 #include "registry.h"
+#include "common/next-iterator.h"
+#include "common/safe-iterator.h"
 
 struct target_ops;
 struct bfd;
@@ -148,6 +150,22 @@ struct program_space
     return objfiles_range (objfiles_head);
   }
 
+  typedef next_adapter<struct objfile,
+		       basic_safe_iterator<next_iterator<objfile>>>
+    objfiles_safe_range;
+
+  /* An iterable object that can be used to iterate over all objfiles.
+     The basic use is in a foreach, like:
+
+     for (objfile *objf : pspace->objfiles_safe ()) { ... }
+
+     This variant uses a basic_safe_iterator so that objfiles can be
+     deleted during iteration.  */
+  objfiles_safe_range objfiles_safe ()
+  {
+    return objfiles_safe_range (objfiles_head);
+  }
+
   /* Pointer to next in linked list.  */
   struct program_space *next = NULL;