sched-tp.h

/*
 * Copyright (C) 2008 Philippe Gerum <rpm@xenomai.org>.
 *
 * Xenomai is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2 of the License,
 * or (at your option) any later version.
 *
 * Xenomai 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Xenomai; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */
#ifndef _COBALT_KERNEL_SCHED_TP_H
#define _COBALT_KERNEL_SCHED_TP_H

#ifndef _COBALT_KERNEL_SCHED_H
#error "please don't include cobalt/kernel/sched-tp.h directly"
#endif

#ifdef CONFIG_XENO_OPT_SCHED_TP

#define XNSCHED_TP_MIN_PRIO     1
#define XNSCHED_TP_MAX_PRIO     255
#define XNSCHED_TP_NR_PRIO      \
        (XNSCHED_TP_MAX_PRIO - XNSCHED_TP_MIN_PRIO + 1)

extern struct xnsched_class xnsched_class_tp;

struct xnsched_tp_window {
        xnticks_t w_offset;
        int w_part;
};

struct xnsched_tp_schedule {
        int pwin_nr;
        xnticks_t tf_duration;
        atomic_t refcount;
        struct xnsched_tp_window pwins[0];
};

struct xnsched_tp {
        struct xnsched_tpslot {
                xnsched_queue_t runnable;
        } partitions[CONFIG_XENO_OPT_SCHED_TP_NRPART];
        struct xnsched_tpslot idle;
        struct xnsched_tpslot *tps;
        struct xntimer tf_timer;
        struct xnsched_tp_schedule *gps;
        int wnext;
        xnticks_t tf_start;
        struct list_head threads;
};

static inline int xnsched_tp_init_thread(struct xnthread *thread)
{
        thread->tps = NULL;

        return 0;
}

struct xnsched_tp_schedule *
xnsched_tp_set_schedule(struct xnsched *sched,
                        struct xnsched_tp_schedule *gps);

void xnsched_tp_start_schedule(struct xnsched *sched);

void xnsched_tp_stop_schedule(struct xnsched *sched);

int xnsched_tp_get_partition(struct xnsched *sched);

struct xnsched_tp_schedule *
xnsched_tp_get_schedule(struct xnsched *sched);

void xnsched_tp_put_schedule(struct xnsched_tp_schedule *gps);

#endif /* CONFIG_XENO_OPT_SCHED_TP */

#endif /* !_COBALT_KERNEL_SCHED_TP_H */