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1/* pause -- suspend the process until a signal arrives. POSIX.1 version.
2 Copyright (C) 2003-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <signal.h>
20#include <unistd.h>
21#include <sysdep-cancel.h>
22#include <sigsetops.h>
23
24/* Suspend the process until a signal arrives.
25 This always returns -1 and sets errno to EINTR. */
26
27int
28__libc_pause (void)
29{
30 sigset_t set;
31
32 __sigemptyset (&set);
33 __sigprocmask (SIG_BLOCK, NULL, &set);
34
35 /* pause is a cancellation point, but so is sigsuspend.
36 So no need for anything special here. */
37
38 return __sigsuspend (&set);
39}
40weak_alias (__libc_pause, pause)
41

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