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57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/* Internal sigsuspend system call for LinuxThreads. Generic Linux version.
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Copyright (C) 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 <errno.h>
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#include <signal.h>
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#include <unistd.h>
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#include <sysdep.h>
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#include <sys/syscall.h>
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#include <linuxthreads/internals.h>
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#include "kernel-features.h"
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void
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__pthread_sigsuspend (const sigset_t *set)
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{
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INTERNAL_SYSCALL_DECL (err);
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#if !__ASSUME_REALTIME_SIGNALS
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static int __pthread_missing_rt_sigs;
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# ifdef __NR_rt_sigsuspend
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/* First try the RT signals. */
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if (!__pthread_missing_rt_sigs)
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{
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/* XXX The size argument hopefully will have to be changed to the
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real size of the user-level sigset_t. */
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int r;
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r = INTERNAL_SYSCALL (rt_sigsuspend, err, 2, set, _NSIG / 8);
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if (INTERNAL_SYSCALL_ERRNO (r, err) != ENOSYS)
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return;
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__pthread_missing_rt_sigs = 1;
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}
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# endif
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INTERNAL_SYSCALL (sigsuspend, err, 3, 0, 0, set->__val[0]);
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#else
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INTERNAL_SYSCALL (rt_sigsuspend, err, 2, set, _NSIG / 8);
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#endif
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}
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