From 148c1f77492a22ddfc87375c3b2464d5521a3843 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Wed, 28 Feb 2007 22:25:41 +0000
Subject: add support for ppoll() and emulate poll() with it when __NR_poll
does not exist
---
include/sys/poll.h | 26 ++++++++++++++++++++++++--
1 file changed, 24 insertions(+), 2 deletions(-)
(limited to 'include')
diff --git a/include/sys/poll.h b/include/sys/poll.h
index 89a27eab2..4085b785e 100644
--- a/include/sys/poll.h
+++ b/include/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) 1994,1996-2001,2004,2005,2006 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
@@ -24,6 +24,13 @@
/* 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. */
@@ -44,9 +51,24 @@ __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
#endif /* sys/poll.h */
--
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