root / prex-0.9.0 / usr / sample / task / task.c @ 03e9c04a
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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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} |