/*
 * $Id: ad_private.h,v 1.6 2008-12-03 18:35:44 didg Exp $
 */

#ifndef LIBATALK_ADOUBLE_AD_PRIVATE_H
#define LIBATALK_ADOUBLE_AD_PRIVATE_H 1

#include <atalk/adouble.h>

#ifndef MAP_FAILED
#define MAP_FAILED ((void *) -1)
#endif /* ! MAP_FAILED */

/* this is so that we can keep lists of fds referencing the same file
 * around. that way, we can honor locks created by the same process
 * with the same file. */

#define adf_lock_init(a) do { \
	(a)->adf_lockmax = (a)->adf_lockcount = 0; \
	(a)->adf_excl = 0;(a)->adf_lock = NULL; \
} while (0)

#define adf_lock_free(a) do { \
    int i;\
	if (!(a)->adf_lock) \
		break; \
        for (i = 0; i < (a)->adf_lockcount; i++) {\
            adf_lock_t *lock = (a)->adf_lock + i;\
            if (--(*lock->refcount) < 1)free(lock->refcount); \
        }\
	free((a)->adf_lock); \
	adf_lock_init(a); \
} while (0)

#endif /* libatalk/adouble/ad_private.h */