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772e3426a7
2003-01-28 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/common/pause.c (do_pause): New function. Split from __libc_pause. Implement using sigsuspend. (__libc_pause): Call do_pause to do the real work. * sysdeps/posix/sigpause.c (do_sigpause): Check range of sig_or_mask parameter is is_sig != 0.
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/* Copyright (C) 1991, 1996, 2002, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <signal.h>
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#include <unistd.h>
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#include <sysdep-cancel.h>
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/* Suspend the process until a signal arrives.
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This always returns -1 and sets errno to EINTR. */
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static void
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do_pause (void)
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{
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sigset_t set;
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sigemptyset (&set);
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__sigsuspend (&set);
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}
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int
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__libc_pause (void)
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{
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if (SINGLE_THREAD_P)
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{
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do_pause ();
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return -1;
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}
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int oldtype = LIBC_CANCEL_ASYNC ();
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(void) do_pause ();
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LIBC_CANCEL_RESET (oldtype);
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return -1;
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}
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weak_alias (__libc_pause, pause)
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