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authorRoland McGrath <roland@gnu.org>2003-02-24 03:51:24 +0000
committerRoland McGrath <roland@gnu.org>2003-02-24 03:51:24 +0000
commit98d8dc64a9b9fc0dbd7af6cf2e4359403aaeb817 (patch)
tree96279a1c9c2b0bd5f8f6eeeb35c2aabb004bcb55 /sysdeps/posix/pause.c
parent5e47b76b5049f2449fc81e873bb87e6d06e3b2ef (diff)
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2003-02-23 Roland McGrath <roland@redhat.com>
	* sysdeps/posix/pause.c: New file.
	* sysdeps/unix/common/pause.c: File removed.
Diffstat (limited to 'sysdeps/posix/pause.c')
-rw-r--r--sysdeps/posix/pause.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/sysdeps/posix/pause.c b/sysdeps/posix/pause.c
new file mode 100644
index 0000000000..db2c54f29d
--- /dev/null
+++ b/sysdeps/posix/pause.c
@@ -0,0 +1,38 @@
+/* pause -- suspend the process until a signal arrives.  POSIX.1 version.
+   Copyright (C) 2003 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>
+
+/* 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)