semobj.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 _COPPERPLATE_SEMOBJ_H
#define _COPPERPLATE_SEMOBJ_H
 
#include <boilerplate/compiler.h>
#include <copperplate/reference.h>
 
struct semobj_waitentry {
        pid_t pid;
        char name[32];
};
 
#ifdef CONFIG_XENO_COBALT
 
#include <semaphore.h>
 
struct semobj_corespec {
        sem_t sem;
};
 
#else  /* CONFIG_XENO_MERCURY */
 
#include <copperplate/syncobj.h>
 
struct semobj_corespec {
        struct syncobj sobj;
        int flags;
        int value;
};
 
#endif /* CONFIG_XENO_MERCURY */
 
struct semobj {
        struct semobj_corespec core;
        fnref_type(void (*)(struct semobj *smobj)) finalizer;
};
 
#define SEMOBJ_PRIO     0x1
#define SEMOBJ_PULSE    0x2
#define SEMOBJ_WARNDEL  0x4
 
#ifdef __cplusplus
extern "C" {
#endif
 
int semobj_init(struct semobj *smobj,
                int flags, int value,
                fnref_type(void (*)(struct semobj *smobj)) finalizer);
 
int semobj_destroy(struct semobj *smobj);
 
void semobj_uninit(struct semobj *smobj);
 
int semobj_post(struct semobj *smobj);
 
int semobj_broadcast(struct semobj *smobj);
 
int semobj_wait(struct semobj *smobj,
                const struct timespec *timeout) __must_check;
 
int semobj_getvalue(struct semobj *smobj, int *sval);
 
int semobj_inquire(struct semobj *smobj, size_t waitsz,
                   struct semobj_waitentry *waitlist,
                   int *val_r);
 
#ifdef __cplusplus
}
#endif
 
#endif /* _COPPERPLATE_SEMOBJ_H */