internal.h

/*
 * Copyright (C) 2011 Philippe Gerum <rpm@xenomai.org>.
 *
 * 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 _ALCHEMY_INTERNAL_H
#define _ALCHEMY_INTERNAL_H
 
#include "boilerplate/ancillaries.h"
#include "boilerplate/namegen.h"
#include "timer.h"
 
#define DEFINE_SYNC_LOOKUP(__name, __dsctype)                           \
static inline struct alchemy_ ## __name *                               \
get_alchemy_ ## __name(__dsctype *desc,                                 \
                       struct syncstate *syns, int *err_r)              \
{                                                                       \
        struct alchemy_ ## __name *cb;                                  \
                                                                        \
        if (bad_pointer(desc)) {                                        \
                *err_r = -EINVAL;                                       \
                return NULL;                                            \
        }                                                               \
                                                                        \
        cb = mainheap_deref(desc->handle, struct alchemy_ ## __name);   \
        if (bad_pointer(cb)) {                                          \
                *err_r = -EINVAL;                                       \
                return NULL;                                            \
        }                                                               \
                                                                        \
        if (syncobj_lock(&cb->sobj, syns) ||                            \
            cb->magic != __name ## _magic) {                            \
                *err_r = -EINVAL;                                       \
                return NULL;                                            \
        }                                                               \
                                                                        \
        return cb;                                                      \
}                                                                       \
                                                                        \
static inline                                                           \
void put_alchemy_ ## __name(struct alchemy_ ## __name *cb,              \
                            struct syncstate *syns)                     \
{                                                                       \
        syncobj_unlock(&cb->sobj, syns);                                \
}
 
#define __DEFINE_LOOKUP(__scope, __name, __dsctype)                     \
__scope struct alchemy_ ## __name *                                     \
find_alchemy_ ## __name(__dsctype *desc, int *err_r)                    \
{                                                                       \
        struct alchemy_ ## __name *cb;                                  \
                                                                        \
        if (bad_pointer(desc)) {                                        \
                *err_r = -EINVAL;                                       \
                return NULL;                                            \
        }                                                               \
                                                                        \
        cb = mainheap_deref(desc->handle, struct alchemy_ ## __name);   \
        if (bad_pointer(cb) || cb->magic != __name ## _magic) {         \
                *err_r = -EINVAL;                                       \
                return NULL;                                            \
        }                                                               \
                                                                        \
        return cb;                                                      \
}                                                                       \
 
#define DEFINE_LOOKUP_PRIVATE(__name, __dsctype)                        \
        __DEFINE_LOOKUP(static inline, __name, __dsctype)
 
#define DEFINE_LOOKUP(__name, __dsctype)                                \
        __DEFINE_LOOKUP(, __name, __dsctype)
 
struct syncluster;
 
int alchemy_bind_object(const char *name, struct syncluster *sc,
                        RTIME timeout,
                        int offset,
                        uintptr_t *handle);
 
#endif /* !_ALCHEMY_INTERNAL_H */