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Annotation of prex-old/sys/include/task.h, Revision 1.1.1.1.2.1

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:
1.1.1.1.2.1! nbrk       33: #include <prex/capability.h>   /* for cap_t */
1.1       nbrk       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 */
1.1.1.1.2.1! nbrk       45:        vm_map_t        map;            /* address space description */
        !            46:        int             suscnt;         /* suspend counter */
1.1       nbrk       47:        cap_t           capability;     /* security permission flag */
                     48:        struct timer    alarm;          /* alarm timer */
1.1.1.1.2.1! nbrk       49:        void (*handler)(int);           /* pointer to excepion handler */
        !            50:        task_t          parent;         /* parent task */
1.1       nbrk       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 */