[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/sysdeps/mach/usleep.c b/ap/libc/glibc/glibc-2.23/sysdeps/mach/usleep.c
new file mode 100644
index 0000000..542026d
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/sysdeps/mach/usleep.c
@@ -0,0 +1,41 @@
+/* Copyright (C) 1992-2016 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 <errno.h>
+#include <mach.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+/* Sleep USECONDS microseconds, or until a previously set timer goes off. */
+int
+usleep (useconds_t useconds)
+{
+ mach_port_t recv;
+ struct timeval before, after;
+
+ recv = __mach_reply_port ();
+
+ if (__gettimeofday (&before, NULL) < 0)
+ return -1;
+ (void) __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT,
+ 0, 0, recv, (useconds + 999) / 1000, MACH_PORT_NULL);
+ __mach_port_destroy (mach_task_self (), recv);
+ if (__gettimeofday (&after, NULL) < 0)
+ return -1;
+
+ return 0;
+}