master 66656bf5f86 4/4: Simplify Objective C autorelease pool handling

[Alan Third]

branch: master
commit 66656bf5f86c7623072a08fa3f29ba9c879d3f6d
Author: Alan Third <alan@idiocy.org>
Commit: Alan Third <alan@idiocy.org>

    Simplify Objective C autorelease pool handling
    
    * src/emacs.c: Remove ns_pool.
    (main): Replace ns_pool stuff with call to ns_init_pool.
    (Fkill_emacs): The pools are drained automatically when the
    application exits, so it's probably not worth draining the pool here.
    (decode_env_path): No longer required as this is handled by
    `outerpool' defined in nsterm.m.
    * src/nsterm.h:
    * src/nsterm.m (ns_init_pool): New function.
---
 src/emacs.c  | 24 +++++-------------------
 src/nsterm.h |  1 +
 src/nsterm.m |  9 +++++++++
 3 files changed, 15 insertions(+), 19 deletions(-)

diff --git a/src/emacs.c b/src/emacs.c
index 6101ed4004c..0489363082b 100644
--- a/src/emacs.c
+++ b/src/emacs.c
@@ -401,11 +401,6 @@ section of the Emacs manual or the file BUGS.\n"
 /* True if handling a fatal error already.  */
 bool fatal_error_in_progress;
 
-#ifdef HAVE_NS
-/* NS autorelease pool, for memory management.  */
-static void *ns_pool;
-#endif
-
 #if !HAVE_SETLOCALE
 static char *
 setlocale (int cat, char const *locale)
@@ -1424,6 +1419,11 @@ main (int argc, char **argv)
   w32_init_main_thread ();
 #endif
 
+#ifdef HAVE_NS
+  /* Initialize the Obj C autorelease pool.  */
+  ns_init_pool ();
+#endif
+
 #ifdef HAVE_PDUMPER
   if (attempt_load_pdump)
     initial_emacs_executable = load_pdump (argc, argv, dump_file);
@@ -1643,7 +1643,6 @@ main (int argc, char **argv)
   if (! (lc_all && strcmp (lc_all, "C") == 0))
     {
       #ifdef HAVE_NS
-        ns_pool = ns_alloc_autorelease_pool ();
         ns_init_locale ();
       #endif
       setlocale (LC_ALL, "");
@@ -2993,10 +2992,6 @@ killed.  */
 
   shut_down_emacs (0, (STRINGP (arg) && !feof (stdin)) ? arg : Qnil);
 
-#ifdef HAVE_NS
-  ns_release_autorelease_pool (ns_pool);
-#endif
-
   /* If we have an auto-save list file,
      kill it because we are exiting Emacs deliberately (not crashing).
      Do it after shut_down_emacs, which does an auto-save.  */
@@ -3331,9 +3326,6 @@ decode_env_path (const char *evarname, const char 
*defalt, bool empty)
 {
   const char *path, *p;
   Lisp_Object lpath, element, tem;
-#ifdef NS_SELF_CONTAINED
-  void *autorelease = NULL;
-#endif
   /* Default is to use "." for empty path elements.
      But if argument EMPTY is true, use nil instead.  */
   Lisp_Object empty_element = empty ? Qnil : build_string (".");
@@ -3361,8 +3353,6 @@ decode_env_path (const char *evarname, const char 
*defalt, bool empty)
   if (!path)
     {
 #ifdef NS_SELF_CONTAINED
-      /* ns_relocate needs a valid autorelease pool around it.  */
-      autorelease = ns_alloc_autorelease_pool ();
       path = ns_relocate (defalt);
 #else
       path = defalt;
@@ -3466,10 +3456,6 @@ decode_env_path (const char *evarname, const char 
*defalt, bool empty)
        break;
     }
 
-#ifdef NS_SELF_CONTAINED
-  if (autorelease)
-    ns_release_autorelease_pool (autorelease);
-#endif
   return Fnreverse (lpath);
 }
 
diff --git a/src/nsterm.h b/src/nsterm.h
index cb162039ad8..324c23532de 100644
--- a/src/nsterm.h
+++ b/src/nsterm.h
@@ -1180,6 +1180,7 @@ extern void  ns_retain_object (void *obj);
 extern void *ns_alloc_autorelease_pool (void);
 extern void ns_release_autorelease_pool (void *);
 extern const char *ns_get_defaults_value (const char *key);
+extern void ns_init_pool (void);
 extern void ns_init_locale (void);
 
 /* in nsmenu */
diff --git a/src/nsterm.m b/src/nsterm.m
index dc4aef55113..dbb54632add 100644
--- a/src/nsterm.m
+++ b/src/nsterm.m
@@ -549,6 +549,15 @@ ns_relocate (const char *epath)
 }
 
 
+void
+ns_init_pool (void)
+/* Initialize the 'outerpool' autorelease pool.  This should be called
+   from main before any Objective C code is run.  */
+{
+  outerpool = [[NSAutoreleasePool alloc] init];
+}
+
+
 void
 ns_init_locale (void)
 /* macOS doesn't set any environment variables for the locale when run