WebSVN – HelenOS-historic – Diff – /kernel/trunk/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.
 */
 
#ifndef __TASK_H__
#define __TASK_H__
 
#include <typedefs.h>
#include <synch/spinlock.h>
#include <synch/mutex.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 {
    SPINLOCK_DECLARE(lock);
    char *name;
    link_t th_head;     /**< List of threads contained in this task. */
    as_t *as;       /**< Address space. */
    task_id_t taskid;   /**< Unique identity of task */
 
    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 */
   
    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. */
};
 
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 task_t *task_run_program(void *program_addr, char *name);
extern task_t *task_find_by_id(task_id_t id);
 
#ifndef task_create_arch
extern void task_create_arch(task_t *t);
#endif
 
extern __native sys_task_get_id(task_id_t *uspace_task_id);
 
#endif
 

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/include/proc/task.h – Rev 1460 → 1468

Rev 1460		Rev 1468
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	#ifndef __TASK_H__	29	#ifndef __TASK_H__
30	#define __TASK_H__	30	#define __TASK_H__
31		31
32	#include <typedefs.h>	32	#include <typedefs.h>
33	#include <synch/spinlock.h>	33	#include <synch/spinlock.h>
34	#include <synch/mutex.h>	34	#include <synch/mutex.h>
35	#include <adt/btree.h>	35	#include <adt/btree.h>
36	#include <adt/list.h>	36	#include <adt/list.h>
37	#include <ipc/ipc.h>	37	#include <ipc/ipc.h>
38	#include <security/cap.h>	38	#include <security/cap.h>
39	#include <arch/proc/task.h>	39	#include <arch/proc/task.h>
40		40
41	/** Task structure. */	41	/** Task structure. */
42	struct task {	42	struct task {
43	SPINLOCK_DECLARE(lock);	43	SPINLOCK_DECLARE(lock);
44	char *name;	44	char *name;
45	link_t th_head; /*< List of threads contained in this task. /	45	link_t th_head; /*< List of threads contained in this task. /
46	as_t as; /< Address space. /	46	as_t as; /< Address space. /
47	task_id_t taskid; /*< Unique identity of task /	47	task_id_t taskid; /*< Unique identity of task /
48		48
49	cap_t capabilities; /*< Task capabilities. /	49	cap_t capabilities; /*< Task capabilities. /
50		50
51	/* IPC stuff */	51	/* IPC stuff */
52	answerbox_t answerbox; /*< Communication endpoint /	52	answerbox_t answerbox; /*< Communication endpoint /
53	phone_t phones[IPC_MAX_PHONES];	53	phone_t phones[IPC_MAX_PHONES];
54	atomic_t active_calls; /*< Active asynchronous messages /	54	atomic_t active_calls; /*< Active asynchronous messages /
55		55
56	task_arch_t arch; /*< Architecture specific task data. /	56	task_arch_t arch; /*< Architecture specific task data. /
57		57
58	/**	58	/**
59	* Serializes access to the B+tree of task's futexes. This mutex is	59	* Serializes access to the B+tree of task's futexes. This mutex is
60	* independent on the task spinlock.	60	* independent on the task spinlock.
61	*/	61	*/
62	mutex_t futexes_lock;	62	mutex_t futexes_lock;
63	btree_t futexes; /*< B+tree of futexes referenced by this task. /	63	btree_t futexes; /*< B+tree of futexes referenced by this task. /
64	};	64	};
65		65
66	extern spinlock_t tasks_lock;	66	extern spinlock_t tasks_lock;
67	extern btree_t tasks_btree;	67	extern btree_t tasks_btree;
68		68
69	extern void task_init(void);	69	extern void task_init(void);
70	extern task_t task_create(as_t as, char *name);	70	extern task_t task_create(as_t as, char *name);
71	extern task_t task_run_program(void program_addr, char *name);	71	extern task_t task_run_program(void program_addr, char *name);
72	extern task_t *task_find_by_id(task_id_t id);	72	extern task_t *task_find_by_id(task_id_t id);
73		73
74	#ifndef task_create_arch	74	#ifndef task_create_arch
75	extern void task_create_arch(task_t *t);	75	extern void task_create_arch(task_t *t);
76	#endif	76	#endif
77		77
78	extern __native sys_task_get_id(task_id_t *uspace_task_id);	78	extern __native sys_task_get_id(task_id_t *uspace_task_id);
79		79
80	#endif	80	#endif
81		81