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/*
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 * Copyright (c) 2005-2006, Kohsuke Ohtani
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the author nor the names of any co-contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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/*
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 * task.c - a sample program to run tasks.
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 */
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#include <sys/prex.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define NR_TASKS 10
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/*
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 * Create new task
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 */
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static task_t
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task_run(void (*func)(void))
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{
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        char *stack;
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        task_t task;
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        thread_t t;
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        stack = malloc(1024);
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        if (task_create(task_self(), VM_SHARE, &task) != 0)
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                return 0;
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        if (thread_create(task, &t) != 0)
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                return 0;
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        if (thread_load(t, func, stack + 1024) != 0)
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                return 0;
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        if (thread_resume(t) != 0)
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                return 0;
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        return task;
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}
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/*
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 * Function to be called in new task.
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 */
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static void
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hey_yo(void)
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{
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        task_t self;
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        /*
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         * Display string
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         */
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        self = task_self();
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        printf("Task %x: Hey, Yo!\n", (u_int)self);
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        /*
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         * Wait 5 sec
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         */
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        timer_sleep(5000, 0);
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        /*
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         * Terminate current task.
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         */
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        printf("Task %x: Bye!\n", (u_int)self);
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        task_terminate(task_self());
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}
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int
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main(int argc, char *argv[])
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{
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        int i;
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        printf("Task sample program\n");
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        /*  Create new tasks */
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        for (i = 0; i < NR_TASKS; i++) {
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                if (task_run(hey_yo) == 0)
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                        panic("failed to create task");
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        }
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        /* Wait here... */
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        task_suspend(task_self());
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        return 0;
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}