/* GNU Mailutils -- a suite of utilities for electronic mail
   Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.

   This 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 of the License, or (at your option) any later version.

   This 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 this library; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA  */

#ifndef _MAILUTILS_MONITOR_H
#define _MAILUTILS_MONITOR_H

#include <unistd.h>
#ifdef _POSIX_THREADS
# include <pthread.h>
#endif

#ifdef _POSIX_THREADS

# define monitor_t pthread_mutex_t

# define MU_MONITOR_INITIALIZER  PTHREAD_MUTEX_INITIALIZER

# define monitor_create(m)  pthread_mutex_init (m, NULL)
# define monitor_destroy(m) pthread_mutex_destroy (m)

# define monitor_cleanup_push(routine, arg) pthread_cleanup_push (routine, arg)
# define monitor_cleanup_pop(execute)       pthread_cleanup_pop (execute)

# define monitor_lock(m)   pthread_mutex_lock (&m)
# define monitor_unlock(m) pthread_mutex_unlock (&m)

#else

# define monitor_t int

# define MU_MONITOR_INITIALIZER 0

# define monitor_create(m) (*m = 0)
# define monitor_destroy(m) (*m = 0)

# define monitor_cleanup_push(routine, arg) {
# define monitor_cleanup_pop(execute)       }

# define monitor_lock(m) (m = 1)
# define monitor_unlock(m)  (m = 0)

#endif

#endif /* _MAILUTILS_MONITOR_H */