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[thirdparty/glibc.git] / io / sys / poll.h

diff --git a/io/sys/poll.h b/io/sys/poll.h
index 89a27eab2b7f1aa7e17bc2f18078b896412fd710..9d2e44da73718907c3e531a4f6861b5d44ef349c 100644 (file)
--- a/io/sys/poll.h
+++ b/io/sys/poll.h
@@ -1,5 +1,5 @@
 /* Compatibility definitions for System V `poll' interface.
-   Copyright (C) 1994,96,97,98,99,2000,2001,2004 Free Software Foundation, Inc.
+   Copyright (C) 1994-2019 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
@@ -13,9 +13,8 @@
    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, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef        _SYS_POLL_H
 #define        _SYS_POLL_H     1
@@ -24,6 +23,10 @@
 
 /* Get the platform dependent bits of `poll'.  */
 #include <bits/poll.h>
+#ifdef __USE_GNU
+# include <bits/types/__sigset_t.h>
+# include <bits/types/struct_timespec.h>
+#endif
 
 
 /* Type used for the number of file descriptors.  */
@@ -44,9 +47,30 @@ __BEGIN_DECLS
    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.  */
+   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 */