Subversion Repositories HelenOS

Rev

Rev 3222 | Rev 3492 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
2090 decky 1
/*
2071 jermar 2
 * Copyright (c) 2001-2004 Jakub Jermar
1 jermar 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
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
14
 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
1820 decky 29
/** @addtogroup genericproc
1702 cejka 30
 * @{
31
 */
32
/** @file
33
 */
34
 
1888 jermar 35
#ifndef KERN_TASK_H_
36
#define KERN_TASK_H_
1 jermar 37
 
2092 decky 38
#include <cpu.h>
2105 decky 39
#include <ipc/ipc.h>
1 jermar 40
#include <synch/spinlock.h>
1460 jermar 41
#include <synch/mutex.h>
2089 decky 42
#include <synch/rwlock.h>
1583 jermar 43
#include <synch/futex.h>
2504 jermar 44
#include <adt/avl.h>
1159 jermar 45
#include <adt/btree.h>
788 jermar 46
#include <adt/list.h>
1174 jermar 47
#include <security/cap.h>
1184 jermar 48
#include <arch/proc/task.h>
2089 decky 49
#include <arch/proc/thread.h>
50
#include <arch/context.h>
51
#include <arch/fpu_context.h>
52
#include <arch/cpu.h>
53
#include <mm/tlb.h>
54
#include <proc/scheduler.h>
1 jermar 55
 
2089 decky 56
struct thread;
57
 
703 jermar 58
/** Task structure. */
2089 decky 59
typedef struct task {
2504 jermar 60
    /** Task's linkage for the tasks_tree AVL tree. */
61
    avltree_node_t tasks_tree_node;
62
 
1579 jermar 63
    /** Task lock.
64
     *
2106 jermar 65
     * Must be acquired before threads_lock and thread lock of any of its
66
     * threads.
1579 jermar 67
     */
623 jermar 68
    SPINLOCK_DECLARE(lock);
1579 jermar 69
 
1062 jermar 70
    char *name;
2106 jermar 71
    /** List of threads contained in this task. */
72
    link_t th_head;
73
    /** Address space. */
74
    as_t *as;
75
    /** Unique identity of task. */
76
    task_id_t taskid;
77
    /** Task security context. */
78
    context_id_t context;  
1005 palkovsky 79
 
2106 jermar 80
    /** Number of references (i.e. threads). */
2446 jermar 81
    atomic_t refcount;
82
    /** Number of threads that haven't exited yet. */
83
    atomic_t lifecount;
1579 jermar 84
 
2106 jermar 85
    /** Task capabilities. */
86
    cap_t capabilities;
1579 jermar 87
 
998 palkovsky 88
    /* IPC stuff */
955 palkovsky 89
    answerbox_t answerbox;  /**< Communication endpoint */
90
    phone_t phones[IPC_MAX_PHONES];
2106 jermar 91
    /**
92
     * Active asynchronous messages. It is used for limiting uspace to
93
     * certain extent.
94
     */
2216 decky 95
    atomic_t active_calls;
1184 jermar 96
 
2106 jermar 97
    /** Architecture specific task data. */
2216 decky 98
    task_arch_t arch;
1460 jermar 99
 
100
    /**
1468 jermar 101
     * Serializes access to the B+tree of task's futexes. This mutex is
102
     * independent on the task spinlock.
103
     */
1460 jermar 104
    mutex_t futexes_lock;
2106 jermar 105
    /** B+tree of futexes referenced by this task. */
106
    btree_t futexes;   
2039 decky 107
 
2106 jermar 108
    /** Accumulated accounting. */
109
    uint64_t cycles;
2089 decky 110
} task_t;
1 jermar 111
 
2093 decky 112
SPINLOCK_EXTERN(tasks_lock);
2504 jermar 113
extern avltree_t tasks_tree;
1 jermar 114
 
115
extern void task_init(void);
2227 decky 116
extern void task_done(void);
1062 jermar 117
extern task_t *task_create(as_t *as, char *name);
1579 jermar 118
extern void task_destroy(task_t *t);
1178 jermar 119
extern task_t *task_find_by_id(task_id_t id);
1579 jermar 120
extern int task_kill(task_id_t id);
2039 decky 121
extern uint64_t task_get_accounting(task_t *t);
1 jermar 122
 
2089 decky 123
extern void cap_set(task_t *t, cap_t caps);
124
extern cap_t cap_get(task_t *t);
1579 jermar 125
 
1185 jermar 126
#ifndef task_create_arch
127
extern void task_create_arch(task_t *t);
128
#endif
129
 
1587 jermar 130
#ifndef task_destroy_arch
131
extern void task_destroy_arch(task_t *t);
132
#endif
133
 
1780 jermar 134
extern unative_t sys_task_get_id(task_id_t *uspace_task_id);
1176 jermar 135
 
1 jermar 136
#endif
1702 cejka 137
 
1888 jermar 138
/** @}
1702 cejka 139
 */