From c08bc50a60a92e8d32f302ea411312bc438f05ef Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Mon, 26 Feb 2001 17:53:15 +0000
Subject: Update.

2001-02-26  Ulrich Drepper  <drepper@redhat.com>

	* dlfcn/Makefile (distribute): Add modatexit.c and modcxaatexit.c.
	(tests): Add tstatexit and tstcxaatexit.
	(module-names): Add modatexit and modcxaatexit.
	Add rules to build and run tstatexit and tstcxaatexit.
	* dlfcn/modatexit.c: New file.
	* dlfcn/modcxaatexit.c: New file.
	* dlfcn/tstatexit.c: New file.
	* dlfcn/tstcxaatexit.c: New file.

	* io/Makefile: Pass -DHAVE_DOT_HIDDEN to stat and mknod functions if
	.hidden is available.
	* io/stat.c: If .hidden is available use it to avoid exporting
	functions.
	* io/fstat.c: Likewise.
	* io/lstat.c: Likewise.
	* io/stat64.c: Likewise.
	* io/fstat64.c: Likewise.
	* io/lstat64.c: Likewise.
	* sysdeps/generic/mknod.c: Likewise.

	* malloc/mtrace.c: Use __cxa_atexit and not atexit.
	* sysdeps/generic/bb_init_func.c: Likewise.
	* sysdeps/generic/libc-start.c: Likewise.

	* stdlib/atexit.c (__new_exitfn): Move to cxa_atexit.c.
	(atexit): Implement using __cxa_atexit.
	Use .hidden if availble to avoid exporting atexit.
	* stdlib/cxa_atexit.c (__new_exitfn): Moved to here from atexit.c.
	* stdlib/Versions: Export __new_exitfn for GLIBC_2.2.3.
	* stdlib/Makefile (routines): Add old_atexit.
	(static-only-routines): Add atexit.
	Pass -DHAVE_DOT_HIDDEN for atexit.c if .hidden is available.
	* stdlib/old_atexit.c: New file.

	* intl/Makefile: Remove bogus endif.
---
 stdlib/cxa_atexit.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

(limited to 'stdlib/cxa_atexit.c')

diff --git a/stdlib/cxa_atexit.c b/stdlib/cxa_atexit.c
index e07d0eda35..f602b7a1af 100644
--- a/stdlib/cxa_atexit.c
+++ b/stdlib/cxa_atexit.c
@@ -16,6 +16,7 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#include <bits/libc-lock.h>
 #include <stdlib.h>
 #include "exit.h"
 
@@ -36,3 +37,57 @@ __cxa_atexit (void (*func) (void *), void *arg, void *d)
   new->func.cxa.dso_handle = d;
   return 0;
 }
+
+
+/* We change global data, so we need locking.  */
+__libc_lock_define_initialized (static, lock)
+
+
+static struct exit_function_list initial;
+struct exit_function_list *__exit_funcs = &initial;
+
+struct exit_function *
+__new_exitfn (void)
+{
+  struct exit_function_list *l;
+  size_t i = 0;
+
+  __libc_lock_lock (lock);
+
+  for (l = __exit_funcs; l != NULL; l = l->next)
+    {
+      for (i = 0; i < l->idx; ++i)
+	if (l->fns[i].flavor == ef_free)
+	  break;
+      if (i < l->idx)
+	break;
+
+      if (l->idx < sizeof (l->fns) / sizeof (l->fns[0]))
+	{
+	  i = l->idx++;
+	  break;
+	}
+    }
+
+  if (l == NULL)
+    {
+      l = (struct exit_function_list *)
+	malloc (sizeof (struct exit_function_list));
+      if (l != NULL)
+	{
+	  l->next = __exit_funcs;
+	  __exit_funcs = l;
+
+	  l->idx = 1;
+      	  i = 0;
+	}
+    }
+
+  /* Mark entry as used, but we don't know the flavor now.  */
+  if (l != NULL)
+    l->fns[i].flavor = ef_us;
+
+  __libc_lock_unlock (lock);
+
+  return l == NULL ? NULL : &l->fns[i];
+}
-- 
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