glibc/nptl/thrd_sleep.c

/* C11 threads thread sleep implementation.
   Copyright (C) 2018-2019 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 <time.h>
#include <sysdep-cancel.h>

#include "thrd_priv.h"

int
thrd_sleep (const struct timespec* time_point, struct timespec* remaining)
{
  INTERNAL_SYSCALL_DECL (err);
  int ret = INTERNAL_SYSCALL_CANCEL (nanosleep, err, time_point, remaining);
  if (INTERNAL_SYSCALL_ERROR_P (ret, err))
    {
      /* C11 states thrd_sleep function returns -1 if it has been interrupted
	 by a signal, or a negative value if it fails.  */
      ret = INTERNAL_SYSCALL_ERRNO (ret, err);
      if (ret == EINTR)
	return -1;
      return -2;
    }
  return 0;
}