scoutos / prex-0.9.0 / sys / include / task.h @ 03e9c04a
History | View | Annotate | Download (3.58 KB)
1 | 03e9c04a | Brad Neuman | /*-
|
---|---|---|---|
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 <types.h> |
||
34 | #include <sys/cdefs.h> |
||
35 | #include <sys/list.h> |
||
36 | #include <sys/capability.h> /* for cap_t */ |
||
37 | #include <sys/sysinfo.h> |
||
38 | #include <thread.h> |
||
39 | #include <timer.h> |
||
40 | |||
41 | /*
|
||
42 | * Task struct
|
||
43 | */
|
||
44 | struct task {
|
||
45 | struct list link; /* linkage on task list in system */ |
||
46 | char name[MAXTASKNAME]; /* task name */ |
||
47 | task_t parent; /* parent task */
|
||
48 | vm_map_t map; /* address space description */
|
||
49 | int suscnt; /* suspend count */ |
||
50 | int flags; /* flags defined below */ |
||
51 | cap_t capability; /* security permission flag */
|
||
52 | struct timer alarm; /* timer for alarm exception */ |
||
53 | void (*handler)(int); /* pointer to exception handler */ |
||
54 | struct list threads; /* list of threads */ |
||
55 | struct list objects; /* IPC objects owned by this task */ |
||
56 | struct list mutexes; /* mutexes owned by this task */ |
||
57 | struct list conds; /* cv owned by this task */ |
||
58 | struct list sems; /* semaphores owned by this task */ |
||
59 | int nthreads; /* number of threads */ |
||
60 | int nobjects; /* number of IPC objects */ |
||
61 | int nsyncs; /* number of syncronizer objects */ |
||
62 | }; |
||
63 | |||
64 | #define curtask (curthread->task)
|
||
65 | |||
66 | /* flags */
|
||
67 | #define TF_SYSTEM 0x00000001 /* kernel task (kern_task) */ |
||
68 | #define TF_TRACE 0x00000002 /* process system call tracing active */ |
||
69 | #define TF_PROFIL 0x00000004 /* has started profiling */ |
||
70 | #define TF_AUDIT 0x00000008 /* audit mode */ |
||
71 | |||
72 | /* default flags */
|
||
73 | #ifdef CONFIG_AUDIT
|
||
74 | #define TF_DEFAULT TF_AUDIT
|
||
75 | #else
|
||
76 | #define TF_DEFAULT 0 |
||
77 | #endif
|
||
78 | |||
79 | /* vm option for task_create(). */
|
||
80 | #define VM_NEW 0 /* create new memory map */ |
||
81 | #define VM_SHARE 1 /* share parent's memory map */ |
||
82 | #define VM_COPY 2 /* duplicate parent's memory map */ |
||
83 | |||
84 | __BEGIN_DECLS |
||
85 | int task_create(task_t, int, task_t *); |
||
86 | int task_terminate(task_t);
|
||
87 | task_t task_self(void);
|
||
88 | int task_suspend(task_t);
|
||
89 | int task_resume(task_t);
|
||
90 | int task_setname(task_t, const char *); |
||
91 | int task_setcap(task_t, cap_t);
|
||
92 | int task_chkcap(task_t, cap_t);
|
||
93 | int task_capable(cap_t);
|
||
94 | int task_valid(task_t);
|
||
95 | int task_access(task_t);
|
||
96 | int task_info(struct taskinfo *); |
||
97 | void task_bootstrap(void); |
||
98 | void task_init(void); |
||
99 | __END_DECLS |
||
100 | |||
101 | #endif /* !_TASK_H */ |