File: [local] / prex-old / sys / include / task.h (download)
Revision 1.1.1.1 (vendor branch), Tue Jun 3 09:38:45 2008 UTC (16 years, 3 months ago) by nbrk
Branch: MAIN, KOHSUKE
CVS Tags: PREX_0_7_BASE, HEAD Branch point for: PREX_0_8_BASE
Changes since 1.1: +0 -0 lines
Yeah, this is an initial import of Prex, portable real-time microkernel
operating system. I wanna hack it for non-profit but fun, so let it in.
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/*-
* Copyright (c) 2005-2006, Kohsuke Ohtani
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _TASK_H
#define _TASK_H
#include <prex/capability.h>
#include <timer.h>
/*
* Task struct
*/
struct task {
int magic; /* magic number */
char name[MAXTASKNAME]; /* task name */
struct list link; /* link for all tasks in system */
struct list objects; /* objects owned by this task */
struct list threads; /* threads in this task */
vm_map_t map; /* virtual memory map */
int suspend_count; /* suspend counter */
cap_t capability; /* security permission flag */
struct timer alarm; /* alarm timer */
void (*exc_handler)(int, u_long); /* pointer to excepion handler */
struct task *parent; /* parent task */
};
#define cur_task() (cur_thread->task)
#define task_valid(tsk) (kern_area(tsk) && ((tsk)->magic == TASK_MAGIC))
#define task_capable(cap) ((int)(cur_task()->capability & (cap)))
/* vm option for task_create(). */
#define VM_NEW 0 /* Create new memory map */
#define VM_SHARE 1 /* Share parent's memory map */
#define VM_COPY 2 /* Duplicate parent's memory map */
extern int task_create(task_t, int, task_t *);
extern int task_terminate(task_t);
extern task_t task_self(void);
extern int task_suspend(task_t);
extern int task_resume(task_t);
extern int task_name(task_t, const char *);
extern int task_getcap(task_t, cap_t *);
extern int task_setcap(task_t, cap_t *);
extern int task_access(task_t);
extern void task_bootstrap(void);
extern void task_dump(void);
extern void task_init(void);
#endif /* !_TASK_H */