task.h

/*
 * Copyright (C) 2008 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 _PSOS_TASK_H
#define _PSOS_TASK_H
 
#include <boilerplate/hash.h>
#include <copperplate/threadobj.h>
#include <copperplate/syncobj.h>
#include <copperplate/cluster.h>
 
struct psos_task_args {
        void (*entry)(u_long a0, u_long a1, u_long a2, u_long a3);
        u_long arg0;
        u_long arg1;
        u_long arg2;
        u_long arg3;
};
 
#define PSOSTASK_NR_REGS  16
 
struct psos_task {
 
        int flags;
        int mode;
        u_long events;
        u_long notepad[PSOSTASK_NR_REGS];
        struct pvlistobj timer_list; /* Private. Never accessed remotely. */
 
        char name[XNOBJECT_NAME_LEN];
        struct psos_task_args args;
 
        struct threadobj thobj;
        struct syncobj sobj;    /* For events. */
        struct clusterobj cobj;
};
 
#define task_magic      0x8181fafa
 
static inline struct psos_task *psos_task_current(void)
{
        struct threadobj *thobj = threadobj_current();
 
        if (thobj == NULL ||
            threadobj_get_magic(thobj) != task_magic)
                return NULL;
 
        return container_of(thobj, struct psos_task, thobj);
}
 
struct psos_task *get_psos_task(u_long tid, int *err_r);
 
struct psos_task *get_psos_task_or_self(u_long tid, int *err_r);
 
void put_psos_task(struct psos_task *task);
 
int __ev_send(struct psos_task *task, unsigned long events);
 
extern struct cluster psos_task_table;
 
#endif /* _PSOS_TASK_H */