/* Copyright (C) 2002-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.

   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 <semaphore.h>

#include "pthreadP.h"

#define SEM_SHM_PREFIX  "sem."

/* Keeping track of currently used mappings.  */

struct inuse_sem

{

  dev_t dev;

  ino_t ino;

  int refcnt;

  sem_t *sem;

  char name[0];

};

/* The search tree for existing mappings.  */

extern void *__sem_mappings attribute_hidden;

/* Lock to protect the search tree.  */

extern int __sem_mappings_lock attribute_hidden;

/* Comparison function for search in tree with existing mappings.  */

extern int __sem_search (const void *a, const void *b) attribute_hidden;

/* Prototypes of functions with multiple interfaces.  */

extern int __new_sem_init (sem_t *sem, int pshared, unsigned int value);

extern int __old_sem_init (sem_t *sem, int pshared, unsigned int value);

extern int __new_sem_destroy (sem_t *sem);

extern int __new_sem_post (sem_t *sem);

extern int __new_sem_wait (sem_t *sem);

extern int __old_sem_wait (sem_t *sem);

extern int __new_sem_trywait (sem_t *sem);

extern int __new_sem_getvalue (sem_t *sem, int *sval);