[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/elf/dl-scope.c b/ap/libc/glibc/glibc-2.23/elf/dl-scope.c
new file mode 100644
index 0000000..32b2767
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/elf/dl-scope.c
@@ -0,0 +1,57 @@
+/* Memory handling for the scope data structures.
+ Copyright (C) 2009-2016 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <stdlib.h>
+#include <ldsodefs.h>
+#include <sysdep-cancel.h>
+
+
+int
+_dl_scope_free (void *old)
+{
+ struct dl_scope_free_list *fsl;
+#define DL_SCOPE_FREE_LIST_SIZE (sizeof (fsl->list) / sizeof (fsl->list[0]))
+
+ if (RTLD_SINGLE_THREAD_P)
+ free (old);
+ else if ((fsl = GL(dl_scope_free_list)) == NULL)
+ {
+ GL(dl_scope_free_list) = fsl = malloc (sizeof (*fsl));
+ if (fsl == NULL)
+ {
+ THREAD_GSCOPE_WAIT ();
+ free (old);
+ return 1;
+ }
+ else
+ {
+ fsl->list[0] = old;
+ fsl->count = 1;
+ }
+ }
+ else if (fsl->count < DL_SCOPE_FREE_LIST_SIZE)
+ fsl->list[fsl->count++] = old;
+ else
+ {
+ THREAD_GSCOPE_WAIT ();
+ while (fsl->count > 0)
+ free (fsl->list[--fsl->count]);
+ return 1;
+ }
+ return 0;
+}