Import glibc-mainline for 2006-08-16

git-svn-id: svn://svn.eglibc.org/fsf/trunk@4 7b3dc134-2b1b-0410-93df-9e9f96275f8d

1 files changed, 57 insertions, 0 deletions

diff --git a/libc/sysdeps/posix/pause.c b/libc/sysdeps/posix/pause.c
new file mode 100644
index 000000000..538c186ec
--- /dev/null
+++ b/libc/sysdeps/posix/pause.c
@@ -0,0 +1,57 @@
+/* pause -- suspend the process until a signal arrives.  POSIX.1 version.
+   Copyright (C) 2003, 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
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <signal.h>
+#include <unistd.h>
+#include <sysdep-cancel.h>
+
+/* Suspend the process until a signal arrives.
+   This always returns -1 and sets errno to EINTR.  */
+
+int
+__libc_pause (void)
+{
+  sigset_t set;
+
+  __sigemptyset (&set);
+  __sigprocmask (SIG_BLOCK, NULL, &set);
+
+  /* pause is a cancellation point, but so is sigsuspend.
+     So no need for anything special here.  */
+
+  return __sigsuspend (&set);
+}
+weak_alias (__libc_pause, pause)
+
+LIBC_CANCEL_HANDLED ();		/* sigsuspend handles our cancellation.  */
+
+#ifndef NO_CANCELLATION
+# include <not-cancel.h>
+
+int
+__pause_nocancel (void)
+{
+  sigset_t set;
+
+  __sigemptyset (&set);
+  __sigprocmask (SIG_BLOCK, NULL, &set);
+
+  return sigsuspend_not_cancel (&set);
+}
+#endif