WebSVN – HelenOS – Diff – /branches/dynload/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 <cpu.h>
#include <ipc/ipc.h>
#include <synch/spinlock.h>
#include <synch/mutex.h>
#include <synch/rwlock.h>
#include <synch/futex.h>
#include <adt/avl.h>
#include <adt/btree.h>
#include <adt/list.h>
#include <security/cap.h>
#include <arch/proc/task.h>
#include <arch/proc/thread.h>
#include <arch/context.h>
#include <arch/fpu_context.h>
#include <arch/cpu.h>
#include <mm/tlb.h>
#include <proc/scheduler.h>
#include <udebug/udebug.h>
#include <ipc/kbox.h>
 
#define TASK_NAME_BUFLEN    20
 
struct thread;
 
/** Task structure. */
typedef struct task {
    /** Task's linkage for the tasks_tree AVL tree. */
    avltree_node_t tasks_tree_node;
   
    /** Task lock.
     *
     * Must be acquired before threads_lock and thread lock of any of its
     * threads.
     */
    SPINLOCK_DECLARE(lock);
 
    char name[TASK_NAME_BUFLEN];
    /** List of threads contained in this task. */
    link_t th_head;
    /** Address space. */
    as_t *as;
    /** Unique identity of task. */
    task_id_t taskid;
    /** Task security context. */
    context_id_t context;  
 
    /** Number of references (i.e. threads). */
    atomic_t refcount;
    /** Number of threads that haven't exited yet. */
    atomic_t lifecount;
 
    /** Task capabilities. */
    cap_t capabilities;
 
    /* IPC stuff */
    answerbox_t answerbox;  /**< Communication endpoint */
    phone_t phones[IPC_MAX_PHONES];
    /**
     * Active asynchronous messages. It is used for limiting uspace to
     * certain extent.
     */
    atomic_t active_calls;
 
#ifdef CONFIG_UDEBUG
    /** Debugging stuff. */
    udebug_task_t udebug;
 
    /** Kernel answerbox. */
    kbox_t kb;
 
 
 
 
 
 
#endif
 
    /** Architecture specific task data. */
    task_arch_t arch;
   
    /**
     * Serializes access to the B+tree of task's futexes. This mutex is
     * independent on the task spinlock.
     */
    mutex_t futexes_lock;
    /** B+tree of futexes referenced by this task. */
    btree_t futexes;   
   
    /** Accumulated accounting. */
    uint64_t cycles;
} task_t;
 
SPINLOCK_EXTERN(tasks_lock);
extern avltree_t tasks_tree;
 
extern void task_init(void);
extern void task_done(void);
extern task_t *task_create(as_t *as, char *name);
extern void task_destroy(task_t *t);
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);
 
extern void cap_set(task_t *t, cap_t caps);
extern cap_t cap_get(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 3569	Rev 3674
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 <cpu.h>	38	#include <cpu.h>
39	#include <ipc/ipc.h>	39	#include <ipc/ipc.h>
40	#include <synch/spinlock.h>	40	#include <synch/spinlock.h>
41	#include <synch/mutex.h>	41	#include <synch/mutex.h>
42	#include <synch/rwlock.h>	42	#include <synch/rwlock.h>
43	#include <synch/futex.h>	43	#include <synch/futex.h>
44	#include <adt/avl.h>	44	#include <adt/avl.h>
45	#include <adt/btree.h>	45	#include <adt/btree.h>
46	#include <adt/list.h>	46	#include <adt/list.h>
47	#include <security/cap.h>	47	#include <security/cap.h>
48	#include <arch/proc/task.h>	48	#include <arch/proc/task.h>
49	#include <arch/proc/thread.h>	49	#include <arch/proc/thread.h>
50	#include <arch/context.h>	50	#include <arch/context.h>
51	#include <arch/fpu_context.h>	51	#include <arch/fpu_context.h>
52	#include <arch/cpu.h>	52	#include <arch/cpu.h>
53	#include <mm/tlb.h>	53	#include <mm/tlb.h>
54	#include <proc/scheduler.h>	54	#include <proc/scheduler.h>
55	#include <udebug/udebug.h>	55	#include <udebug/udebug.h>
-		56	#include <ipc/kbox.h>
56		57
57	#define TASK_NAME_BUFLEN 20	58	#define TASK_NAME_BUFLEN 20
58		59
59	struct thread;	60	struct thread;
60		61
61	/** Task structure. */	62	/** Task structure. */
62	typedef struct task {	63	typedef struct task {
63	/** Task's linkage for the tasks_tree AVL tree. */	64	/** Task's linkage for the tasks_tree AVL tree. */
64	avltree_node_t tasks_tree_node;	65	avltree_node_t tasks_tree_node;
65		66
66	/** Task lock.	67	/** Task lock.
67	*	68	*
68	* Must be acquired before threads_lock and thread lock of any of its	69	* Must be acquired before threads_lock and thread lock of any of its
69	* threads.	70	* threads.
70	*/	71	*/
71	SPINLOCK_DECLARE(lock);	72	SPINLOCK_DECLARE(lock);
72		73
73	char name[TASK_NAME_BUFLEN];	74	char name[TASK_NAME_BUFLEN];
74	/** List of threads contained in this task. */	75	/** List of threads contained in this task. */
75	link_t th_head;	76	link_t th_head;
76	/** Address space. */	77	/** Address space. */
77	as_t *as;	78	as_t *as;
78	/** Unique identity of task. */	79	/** Unique identity of task. */
79	task_id_t taskid;	80	task_id_t taskid;
80	/** Task security context. */	81	/** Task security context. */
81	context_id_t context;	82	context_id_t context;
82		83
83	/** Number of references (i.e. threads). */	84	/** Number of references (i.e. threads). */
84	atomic_t refcount;	85	atomic_t refcount;
85	/** Number of threads that haven't exited yet. */	86	/** Number of threads that haven't exited yet. */
86	atomic_t lifecount;	87	atomic_t lifecount;
87		88
88	/** Task capabilities. */	89	/** Task capabilities. */
89	cap_t capabilities;	90	cap_t capabilities;
90		91
91	/* IPC stuff */	92	/* IPC stuff */
92	answerbox_t answerbox; /*< Communication endpoint /	93	answerbox_t answerbox; /*< Communication endpoint /
93	phone_t phones[IPC_MAX_PHONES];	94	phone_t phones[IPC_MAX_PHONES];
94	/**	95	/**
95	* Active asynchronous messages. It is used for limiting uspace to	96	* Active asynchronous messages. It is used for limiting uspace to
96	* certain extent.	97	* certain extent.
97	*/	98	*/
98	atomic_t active_calls;	99	atomic_t active_calls;
99		100
100	#ifdef CONFIG_UDEBUG	101	#ifdef CONFIG_UDEBUG
101	/** Debugging stuff */	102	/** Debugging stuff. */
102	udebug_task_t udebug;	103	udebug_task_t udebug;
103		104
104	/** Kernel answerbox */	105	/** Kernel answerbox. */
105	answerbox_t kernel_box;	106	kbox_t kb;
106	/** Thread used to service kernel answerbox */	-
107	struct thread *kb_thread;	-
108	/** Kbox thread creation vs. begin of cleanup mutual exclusion */	-
109	mutex_t kb_cleanup_lock;	-
110	/** True if cleanup of kbox has already started */	-
111	bool kb_finished;	-
112	#endif	107	#endif
113		108
114	/** Architecture specific task data. */	109	/** Architecture specific task data. */
115	task_arch_t arch;	110	task_arch_t arch;
116		111
117	/**	112	/**
118	* Serializes access to the B+tree of task's futexes. This mutex is	113	* Serializes access to the B+tree of task's futexes. This mutex is
119	* independent on the task spinlock.	114	* independent on the task spinlock.
120	*/	115	*/
121	mutex_t futexes_lock;	116	mutex_t futexes_lock;
122	/** B+tree of futexes referenced by this task. */	117	/** B+tree of futexes referenced by this task. */
123	btree_t futexes;	118	btree_t futexes;
124		119
125	/** Accumulated accounting. */	120	/** Accumulated accounting. */
126	uint64_t cycles;	121	uint64_t cycles;
127	} task_t;	122	} task_t;
128		123
129	SPINLOCK_EXTERN(tasks_lock);	124	SPINLOCK_EXTERN(tasks_lock);
130	extern avltree_t tasks_tree;	125	extern avltree_t tasks_tree;
131		126
132	extern void task_init(void);	127	extern void task_init(void);
133	extern void task_done(void);	128	extern void task_done(void);
134	extern task_t task_create(as_t as, char *name);	129	extern task_t task_create(as_t as, char *name);
135	extern void task_destroy(task_t *t);	130	extern void task_destroy(task_t *t);
136	extern task_t *task_find_by_id(task_id_t id);	131	extern task_t *task_find_by_id(task_id_t id);
137	extern int task_kill(task_id_t id);	132	extern int task_kill(task_id_t id);
138	extern uint64_t task_get_accounting(task_t *t);	133	extern uint64_t task_get_accounting(task_t *t);
139		134
140	extern void cap_set(task_t *t, cap_t caps);	135	extern void cap_set(task_t *t, cap_t caps);
141	extern cap_t cap_get(task_t *t);	136	extern cap_t cap_get(task_t *t);
142		137
143	#ifndef task_create_arch	138	#ifndef task_create_arch
144	extern void task_create_arch(task_t *t);	139	extern void task_create_arch(task_t *t);
145	#endif	140	#endif
146		141
147	#ifndef task_destroy_arch	142	#ifndef task_destroy_arch
148	extern void task_destroy_arch(task_t *t);	143	extern void task_destroy_arch(task_t *t);
149	#endif	144	#endif
150		145
151	extern unative_t sys_task_get_id(task_id_t *uspace_task_id);	146	extern unative_t sys_task_get_id(task_id_t *uspace_task_id);
152		147
153	#endif	148	#endif
154		149
155	/** @}	150	/** @}
156	*/	151	*/
157		152

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(root)/branches/dynload/kernel/generic/include/proc/task.h – Rev 3569 → 3674