WebSVN – HelenOS – Diff – /trunk/kernel/generic/include/proc/task.h


/*
 * Copyright (c) 2001-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
 */
 
/** @addtogroup genericproc
 * @{
 */
/** @file
 */
 
#ifndef KERN_TASK_H_
#define KERN_TASK_H_
 
#include <typedefs.h>
#include <synch/spinlock.h>
#include <synch/mutex.h>
#include <synch/futex.h>
#include <adt/btree.h>
#include <adt/list.h>
#include <ipc/ipc.h>
#include <security/cap.h>
#include <arch/proc/task.h>
 
/** Task structure. */
struct task {
    /** Task lock.
     *
     * Must be acquired before threads_lock and thread lock of any of its threads.
     */
    SPINLOCK_DECLARE(lock);
   
    char *name;
    thread_t *main_thread;  /**< Pointer to the main thread. */
    link_t th_head;     /**< List of threads contained in this task. */
    as_t *as;       /**< Address space. */
    task_id_t taskid;   /**< Unique identity of task */
    context_id_t context;   /**< Task security context */
 
    /** If this is true, new threads can become part of the task. */
    bool accept_new_threads;
 
    count_t refcount;   /**< Number of references (i.e. threads). */
 
    cap_t capabilities; /**< Task capabilities. */
 
    /* IPC stuff */
    answerbox_t answerbox;  /**< Communication endpoint */
    phone_t phones[IPC_MAX_PHONES];
    atomic_t active_calls;  /**< Active asynchronous messages.
                 *   It is used for limiting uspace to
                 *   certain extent. */
   
    task_arch_t arch;   /**< Architecture specific task data. */
   
    /**
     * Serializes access to the B+tree of task's futexes. This mutex is
     * independent on the task spinlock.
     */
    mutex_t futexes_lock;
    btree_t futexes;    /**< B+tree of futexes referenced by this task. */
   
    uint64_t cycles;    /**< Accumulated accounting. */
};
 
extern spinlock_t tasks_lock;
extern btree_t tasks_btree;
 
extern void task_init(void);
extern task_t *task_create(as_t *as, char *name);
extern void task_destroy(task_t *t);
extern task_t *task_run_program(void *program_addr, char *name);
extern task_t *task_find_by_id(task_id_t id);
extern int task_kill(task_id_t id);
extern uint64_t task_get_accounting(task_t *t);
 
 
#ifndef task_create_arch
extern void task_create_arch(task_t *t);
#endif
 
#ifndef task_destroy_arch
extern void task_destroy_arch(task_t *t);
#endif
 
extern unative_t sys_task_get_id(task_id_t *uspace_task_id);
 
#endif
 
/** @}
 */
 

Rev 2039	Rev 2071
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (c) 2001-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	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	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.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup genericproc	29	/** @addtogroup genericproc
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#ifndef KERN_TASK_H_	35	#ifndef KERN_TASK_H_
36	#define KERN_TASK_H_	36	#define KERN_TASK_H_
37		37
38	#include <typedefs.h>	38	#include <typedefs.h>
39	#include <synch/spinlock.h>	39	#include <synch/spinlock.h>
40	#include <synch/mutex.h>	40	#include <synch/mutex.h>
41	#include <synch/futex.h>	41	#include <synch/futex.h>
42	#include <adt/btree.h>	42	#include <adt/btree.h>
43	#include <adt/list.h>	43	#include <adt/list.h>
44	#include <ipc/ipc.h>	44	#include <ipc/ipc.h>
45	#include <security/cap.h>	45	#include <security/cap.h>
46	#include <arch/proc/task.h>	46	#include <arch/proc/task.h>
47		47
48	/** Task structure. */	48	/** Task structure. */
49	struct task {	49	struct task {
50	/** Task lock.	50	/** Task lock.
51	*	51	*
52	* Must be acquired before threads_lock and thread lock of any of its threads.	52	* Must be acquired before threads_lock and thread lock of any of its threads.
53	*/	53	*/
54	SPINLOCK_DECLARE(lock);	54	SPINLOCK_DECLARE(lock);
55		55
56	char *name;	56	char *name;
57	thread_t main_thread; /< Pointer to the main thread. /	57	thread_t main_thread; /< Pointer to the main thread. /
58	link_t th_head; /*< List of threads contained in this task. /	58	link_t th_head; /*< List of threads contained in this task. /
59	as_t as; /< Address space. /	59	as_t as; /< Address space. /
60	task_id_t taskid; /*< Unique identity of task /	60	task_id_t taskid; /*< Unique identity of task /
61	context_id_t context; /*< Task security context /	61	context_id_t context; /*< Task security context /
62		62
63	/** If this is true, new threads can become part of the task. */	63	/** If this is true, new threads can become part of the task. */
64	bool accept_new_threads;	64	bool accept_new_threads;
65		65
66	count_t refcount; /*< Number of references (i.e. threads). /	66	count_t refcount; /*< Number of references (i.e. threads). /
67		67
68	cap_t capabilities; /*< Task capabilities. /	68	cap_t capabilities; /*< Task capabilities. /
69		69
70	/* IPC stuff */	70	/* IPC stuff */
71	answerbox_t answerbox; /*< Communication endpoint /	71	answerbox_t answerbox; /*< Communication endpoint /
72	phone_t phones[IPC_MAX_PHONES];	72	phone_t phones[IPC_MAX_PHONES];
73	atomic_t active_calls; /**< Active asynchronous messages.	73	atomic_t active_calls; /**< Active asynchronous messages.
74	* It is used for limiting uspace to	74	* It is used for limiting uspace to
75	* certain extent. */	75	* certain extent. */
76		76
77	task_arch_t arch; /*< Architecture specific task data. /	77	task_arch_t arch; /*< Architecture specific task data. /
78		78
79	/**	79	/**
80	* Serializes access to the B+tree of task's futexes. This mutex is	80	* Serializes access to the B+tree of task's futexes. This mutex is
81	* independent on the task spinlock.	81	* independent on the task spinlock.
82	*/	82	*/
83	mutex_t futexes_lock;	83	mutex_t futexes_lock;
84	btree_t futexes; /*< B+tree of futexes referenced by this task. /	84	btree_t futexes; /*< B+tree of futexes referenced by this task. /
85		85
86	uint64_t cycles; /*< Accumulated accounting. /	86	uint64_t cycles; /*< Accumulated accounting. /
87	};	87	};
88		88
89	extern spinlock_t tasks_lock;	89	extern spinlock_t tasks_lock;
90	extern btree_t tasks_btree;	90	extern btree_t tasks_btree;
91		91
92	extern void task_init(void);	92	extern void task_init(void);
93	extern task_t task_create(as_t as, char *name);	93	extern task_t task_create(as_t as, char *name);
94	extern void task_destroy(task_t *t);	94	extern void task_destroy(task_t *t);
95	extern task_t task_run_program(void program_addr, char *name);	95	extern task_t task_run_program(void program_addr, char *name);
96	extern task_t *task_find_by_id(task_id_t id);	96	extern task_t *task_find_by_id(task_id_t id);
97	extern int task_kill(task_id_t id);	97	extern int task_kill(task_id_t id);
98	extern uint64_t task_get_accounting(task_t *t);	98	extern uint64_t task_get_accounting(task_t *t);
99		99
100		100
101	#ifndef task_create_arch	101	#ifndef task_create_arch
102	extern void task_create_arch(task_t *t);	102	extern void task_create_arch(task_t *t);
103	#endif	103	#endif
104		104
105	#ifndef task_destroy_arch	105	#ifndef task_destroy_arch
106	extern void task_destroy_arch(task_t *t);	106	extern void task_destroy_arch(task_t *t);
107	#endif	107	#endif
108		108
109	extern unative_t sys_task_get_id(task_id_t *uspace_task_id);	109	extern unative_t sys_task_get_id(task_id_t *uspace_task_id);
110		110
111	#endif	111	#endif
112		112
113	/** @}	113	/** @}
114	*/	114	*/
115		115

Subversion Repositories HelenOS

(root)/trunk/kernel/generic/include/proc/task.h – Rev 2039 → 2071