[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/sysdeps/posix/sleep.c b/ap/libc/glibc/glibc-2.23/sysdeps/posix/sleep.c
new file mode 100644
index 0000000..f15028b
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/sysdeps/posix/sleep.c
@@ -0,0 +1,66 @@
+/* Sleep for a given number of seconds. POSIX.1 version.
+ Copyright (C) 1991-2016 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 <time.h>
+#include <unistd.h>
+#include <errno.h>
+#include <sys/param.h>
+
+
+/* Make the process sleep for SECONDS seconds, or until a signal arrives
+ and is not ignored. The function returns the number of seconds less
+ than SECONDS which it actually slept (zero if it slept the full time).
+ If a signal handler does a `longjmp' or modifies the handling of the
+ SIGALRM signal while inside `sleep' call, the handling of the SIGALRM
+ signal afterwards is undefined. There is no return value to indicate
+ error, but if `sleep' returns SECONDS, it probably didn't work. */
+unsigned int
+__sleep (unsigned int seconds)
+{
+ int save_errno = errno;
+
+ const unsigned int max
+ = (unsigned int) (((unsigned long int) (~((time_t) 0))) >> 1);
+ struct timespec ts = { 0, 0 };
+ do
+ {
+ if (sizeof (ts.tv_sec) <= sizeof (seconds))
+ {
+ /* Since SECONDS is unsigned assigning the value to .tv_sec can
+ overflow it. In this case we have to wait in steps. */
+ ts.tv_sec += MIN (seconds, max);
+ seconds -= (unsigned int) ts.tv_sec;
+ }
+ else
+ {
+ ts.tv_sec = (time_t) seconds;
+ seconds = 0;
+ }
+
+ if (__nanosleep (&ts, &ts) < 0)
+ /* We were interrupted.
+ Return the number of (whole) seconds we have not yet slept. */
+ return seconds + ts.tv_sec;
+ }
+ while (seconds > 0);
+
+ __set_errno (save_errno);
+
+ return 0;
+}
+weak_alias (__sleep, sleep)