Remove ALL_PSPACES

This removes the ALL_PSPACES macro.  In this case it seemed cleanest
to change how program spaces are stored -- instead of using a linked
list, they are now stored in a std::vector.

gdb/ChangeLog
2020-05-08  Tom Tromey  <tom@tromey.com>

	* symtab.c (set_symbol_cache_size)
	(maintenance_print_symbol_cache, maintenance_flush_symbol_cache)
	(maintenance_print_symbol_cache_statistics): Update.
	* symmisc.c (print_symbol_bcache_statistics)
	(print_objfile_statistics, maintenance_print_objfiles)
	(maintenance_info_symtabs, maintenance_check_symtabs)
	(maintenance_expand_symtabs, maintenance_info_line_tables):
	Update.
	* symfile-debug.c (set_debug_symfile): Update.
	* source.c (forget_cached_source_info): Update.
	* python/python.c (gdbpy_progspaces): Update.
	* psymtab.c (maintenance_info_psymtabs): Update.
	* probe.c (parse_probes): Update.
	* linespec.c (iterate_over_all_matching_symtabs)
	(collect_symtabs_from_filename, search_minsyms_for_name): Update.
	* guile/scm-progspace.c (gdbscm_progspaces): Update.
	* exec.c (exec_target::close): Update.
	* ada-tasks.c (ada_tasks_new_objfile_observer): Update.
	* breakpoint.c (print_one_breakpoint_location)
	(create_longjmp_master_breakpoint)
	(create_std_terminate_master_breakpoint): Update.
	* progspace.c (program_spaces): Now a std::vector.
	(maybe_new_address_space): Update.
	(add_program_space): Remove.
	(program_space::program_space): Update.
	(remove_program_space): Update.
	(number_of_program_spaces): Remove.
	(print_program_space, update_address_spaces): Update.
	* progspace.h (program_spaces): Change type.
	(ALL_PSPACES): Remove.
	(number_of_program_spaces): Don't declare.
	(struct program_space) <next>: Remove.

1 files changed, 12 insertions, 57 deletions

diff --git a/gdb/progspace.c b/gdb/progspace.c
index 252b62e02d7..a0b14a6d2eb 100644
--- a/gdb/progspace.c
+++ b/gdb/progspace.c
@@ -32,7 +32,7 @@
 int last_program_space_num = 0;
 
 /* The head of the program spaces list.  */
-struct program_space *program_spaces;
+std::vector<struct program_space *> program_spaces;
 
 /* Pointer to the current program space.  */
 struct program_space *current_program_space;
@@ -80,7 +80,7 @@ maybe_new_address_space (void)
   if (shared_aspace)
     {
       /* Just return the first in the list.  */
-      return program_spaces->aspace;
+      return program_spaces[0]->aspace;
     }
 
   return new_address_space ();
@@ -109,44 +109,17 @@ init_address_spaces (void)
 
 
 
-/* Add a program space from the program spaces list.  */
-
-static void
-add_program_space (program_space *pspace)
-{
-  if (program_spaces == NULL)
-    program_spaces = pspace;
-  else
-    {
-      program_space *last;
-
-      for (last = program_spaces; last->next != NULL; last = last->next)
-	;
-      last->next = pspace;
-    }
-}
-
 /* Remove a program space from the program spaces list.  */
 
 static void
 remove_program_space (program_space *pspace)
 {
-  program_space *ss, **ss_link;
   gdb_assert (pspace != NULL);
 
-  ss = program_spaces;
-  ss_link = &program_spaces;
-  while (ss != NULL)
-    {
-      if (ss == pspace)
-	{
-	  *ss_link = ss->next;
-	  return;
-	}
-
-      ss_link = &ss->next;
-      ss = *ss_link;
-    }
+  auto iter = std::find (program_spaces.begin (), program_spaces.end (),
+			 pspace);
+  gdb_assert (iter != program_spaces.end ());
+  program_spaces.erase (iter);
 }
 
 /* See progspace.h.  */
@@ -157,7 +130,7 @@ program_space::program_space (address_space *aspace_)
 {
   program_space_alloc_data (this);
 
-  add_program_space (this);
+  program_spaces.push_back (this);
 }
 
 /* See progspace.h.  */
@@ -301,11 +274,10 @@ program_space_empty_p (struct program_space *pspace)
 static void
 print_program_space (struct ui_out *uiout, int requested)
 {
-  struct program_space *pspace;
   int count = 0;
 
   /* Compute number of pspaces we will print.  */
-  ALL_PSPACES (pspace)
+  for (struct program_space *pspace : program_spaces)
     {
       if (requested != -1 && pspace->num != requested)
 	continue;
@@ -322,7 +294,7 @@ print_program_space (struct ui_out *uiout, int requested)
   uiout->table_header (17, ui_left, "exec", "Executable");
   uiout->table_body ();
 
-  ALL_PSPACES (pspace)
+  for (struct program_space *pspace : program_spaces)
     {
       struct inferior *inf;
       int printed_header;
@@ -375,9 +347,7 @@ print_program_space (struct ui_out *uiout, int requested)
 static int
 valid_program_space_id (int num)
 {
-  struct program_space *pspace;
-
-  ALL_PSPACES (pspace)
+  for (struct program_space *pspace : program_spaces)
     if (pspace->num == num)
       return 1;
 
@@ -403,20 +373,6 @@ maintenance_info_program_spaces_command (const char *args, int from_tty)
   print_program_space (current_uiout, requested);
 }
 
-/* Simply returns the count of program spaces.  */
-
-int
-number_of_program_spaces (void)
-{
-  struct program_space *pspace;
-  int count = 0;
-
-  ALL_PSPACES (pspace)
-    count++;
-
-  return count;
-}
-
 /* Update all program spaces matching to address spaces.  The user may
    have created several program spaces, and loaded executables into
    them before connecting to the target interface that will create the
@@ -432,7 +388,6 @@ void
 update_address_spaces (void)
 {
   int shared_aspace = gdbarch_has_shared_address_space (target_gdbarch ());
-  struct program_space *pspace;
   struct inferior *inf;
 
   init_address_spaces ();
@@ -442,11 +397,11 @@ update_address_spaces (void)
       struct address_space *aspace = new_address_space ();
 
       free_address_space (current_program_space->aspace);
-      ALL_PSPACES (pspace)
+      for (struct program_space *pspace : program_spaces)
 	pspace->aspace = aspace;
     }
   else
-    ALL_PSPACES (pspace)
+    for (struct program_space *pspace : program_spaces)
       {
 	free_address_space (pspace->aspace);
 	pspace->aspace = new_address_space ();