/* sem_trywait -- wait on a semaphore.  OpenSolaris version.
   Copyright (C) 2003, 2008 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Paul Mackerras <paulus@au.ibm.com>, 2003.
   OpenSolaris bits contributed by David Bartley
    <dtbartle@csclub.uwaterloo.ca>, 2008.

   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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <errno.h>
#include <sysdep.h>
#include <semaphore.h>
#include <inline-syscall.h>

DECLARE_INLINE_SYSCALL (int, lwp_sema_trywait, sem_t *sp);


int
__new_sem_trywait (sem_t *sem)
{
  int errval = INLINE_SYSCALL (lwp_sema_trywait, 1, sem);
  if (errval == EBUSY)
    errval = EAGAIN;
  if (errval != 0)
    {
      __set_errno (errval);
      return -1;
    }
  return 0;
}
weak_alias (__new_sem_trywait, sem_trywait)