timerobj.h

/*
 * Copyright (C) 2010 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_TIMEROBJ_H
#define _COPPERPLATE_TIMEROBJ_H
 
#include <pthread.h>
#include <time.h>
#include <boilerplate/list.h>
#include <boilerplate/lock.h>
 
struct timerobj {
        struct itimerspec itspec;
        void (*handler)(struct timerobj *tmobj);
        timer_t timer;
        pthread_mutex_t lock;
        int cancel_state;
        struct pvholder next;
};
 
static inline int timerobj_lock(struct timerobj *tmobj)
{
        return write_lock_safe(&tmobj->lock, tmobj->cancel_state);
}
 
static inline int timerobj_unlock(struct timerobj *tmobj)
{
        return write_unlock_safe(&tmobj->lock, tmobj->cancel_state);
}
 
static inline int timerobj_enabled(const struct timerobj *tmobj)
{
        return tmobj->handler != NULL;
}
 
#ifdef __cplusplus
extern "C" {
#endif
 
int timerobj_init(struct timerobj *tmobj);
 
void timerobj_destroy(struct timerobj *tmobj);
 
int timerobj_start(struct timerobj *tmobj,
                   void (*handler)(struct timerobj *tmobj),
                   struct itimerspec *it);
 
int timerobj_stop(struct timerobj *tmobj);
 
int timerobj_pkg_init(void);
 
#ifdef __cplusplus
}
#endif
 
#endif /* _COPPERPLATE_TIMEROBJ_H */