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Annotation of prex-old/sys/include/task.h, Revision 1.1

1.1     ! nbrk        1: /*-
        !             2:  * Copyright (c) 2005-2006, Kohsuke Ohtani
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  * 3. Neither the name of the author nor the names of any co-contributors
        !            14:  *    may be used to endorse or promote products derived from this software
        !            15:  *    without specific prior written permission.
        !            16:  *
        !            17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
        !            18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
        !            21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            27:  * SUCH DAMAGE.
        !            28:  */
        !            29:
        !            30: #ifndef _TASK_H
        !            31: #define _TASK_H
        !            32:
        !            33: #include <prex/capability.h>
        !            34: #include <timer.h>
        !            35:
        !            36: /*
        !            37:  * Task struct
        !            38:  */
        !            39: struct task {
        !            40:        int             magic;          /* magic number */
        !            41:        char            name[MAXTASKNAME]; /* task name */
        !            42:        struct list     link;           /* link for all tasks in system */
        !            43:        struct list     objects;        /* objects owned by this task */
        !            44:        struct list     threads;        /* threads in this task */
        !            45:        vm_map_t        map;            /* virtual memory map */
        !            46:        int             suspend_count;  /* suspend counter */
        !            47:        cap_t           capability;     /* security permission flag */
        !            48:        struct timer    alarm;          /* alarm timer */
        !            49:        void (*exc_handler)(int, u_long); /* pointer to excepion handler */
        !            50:        struct task     *parent;        /* parent task */
        !            51: };
        !            52:
        !            53: #define cur_task()       (cur_thread->task)
        !            54: #define task_valid(tsk)          (kern_area(tsk) && ((tsk)->magic == TASK_MAGIC))
        !            55: #define task_capable(cap) ((int)(cur_task()->capability & (cap)))
        !            56:
        !            57: /* vm option for task_create(). */
        !            58: #define VM_NEW         0       /* Create new memory map */
        !            59: #define VM_SHARE       1       /* Share parent's memory map */
        !            60: #define VM_COPY                2       /* Duplicate parent's memory map */
        !            61:
        !            62: extern int      task_create(task_t, int, task_t *);
        !            63: extern int      task_terminate(task_t);
        !            64: extern task_t   task_self(void);
        !            65: extern int      task_suspend(task_t);
        !            66: extern int      task_resume(task_t);
        !            67: extern int      task_name(task_t, const char *);
        !            68: extern int      task_getcap(task_t, cap_t *);
        !            69: extern int      task_setcap(task_t, cap_t *);
        !            70: extern int      task_access(task_t);
        !            71: extern void     task_bootstrap(void);
        !            72: extern void     task_dump(void);
        !            73: extern void     task_init(void);
        !            74:
        !            75: #endif /* !_TASK_H */