| /* Copyright (C) 1996-2014 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <signal.h> |
| #include <unistd.h> |
| |
| #include <sysdep-cancel.h> |
| #include <sys/syscall.h> |
| |
| #include <kernel-features.h> |
| |
| |
| static inline int __attribute__ ((always_inline)) |
| do_sigsuspend (const sigset_t *set) |
| { |
| return INLINE_SYSCALL (rt_sigsuspend, 2, set, _NSIG / 8); |
| } |
| |
| /* Change the set of blocked signals to SET, |
| wait until a signal arrives, and restore the set of blocked signals. */ |
| int |
| __sigsuspend (set) |
| const sigset_t *set; |
| { |
| if (SINGLE_THREAD_P) |
| return do_sigsuspend (set); |
| |
| int oldtype = LIBC_CANCEL_ASYNC (); |
| |
| int result = do_sigsuspend (set); |
| |
| LIBC_CANCEL_RESET (oldtype); |
| |
| return result; |
| } |
| libc_hidden_def (__sigsuspend) |
| weak_alias (__sigsuspend, sigsuspend) |
| strong_alias (__sigsuspend, __libc_sigsuspend) |
| |
| #ifndef NO_CANCELLATION |
| int |
| __sigsuspend_nocancel (set) |
| const sigset_t *set; |
| { |
| return do_sigsuspend (set); |
| } |
| #endif |
