[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/io/sys/poll.h b/ap/libc/glibc/glibc-2.23/io/sys/poll.h
new file mode 100644
index 0000000..e751860
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/io/sys/poll.h
@@ -0,0 +1,79 @@
+/* Compatibility definitions for System V `poll' interface.
+ Copyright (C) 1994-2016 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/>. */
+
+#ifndef _SYS_POLL_H
+#define _SYS_POLL_H 1
+
+#include <features.h>
+
+/* Get the platform dependent bits of `poll'. */
+#include <bits/poll.h>
+#ifdef __USE_GNU
+/* Get the __sigset_t definition. */
+# include <bits/sigset.h>
+/* Get the timespec definition. */
+# define __need_timespec
+# include <time.h>
+#endif
+
+
+/* Type used for the number of file descriptors. */
+typedef unsigned long int nfds_t;
+
+/* Data structure describing a polling request. */
+struct pollfd
+ {
+ int fd; /* File descriptor to poll. */
+ short int events; /* Types of events poller cares about. */
+ short int revents; /* Types of events that actually occurred. */
+ };
+
+
+__BEGIN_DECLS
+
+/* Poll the file descriptors described by the NFDS structures starting at
+ FDS. If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for
+ an event to occur; if TIMEOUT is -1, block until an event occurs.
+ Returns the number of file descriptors with events, zero if timed out,
+ or -1 for errors.
+
+ This function is a cancellation point and therefore not marked with
+ __THROW. */
+extern int poll (struct pollfd *__fds, nfds_t __nfds, int __timeout);
+
+#ifdef __USE_GNU
+/* Like poll, but before waiting the threads signal mask is replaced
+ with that specified in the fourth parameter. For better usability,
+ the timeout value is specified using a TIMESPEC object.
+
+ This function is a cancellation point and therefore not marked with
+ __THROW. */
+extern int ppoll (struct pollfd *__fds, nfds_t __nfds,
+ const struct timespec *__timeout,
+ const __sigset_t *__ss);
+#endif
+
+__END_DECLS
+
+
+/* Define some inlines helping to catch common problems. */
+#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
+# include <bits/poll2.h>
+#endif
+
+#endif /* sys/poll.h */