WebSVN – HelenOS – Diff – /branches/sparc/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>
 
#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 */
    answerbox_t kernel_box;
    /** Thread used to service kernel answerbox */
    struct thread *kb_thread;
    /** Kbox thread creation vs. begin of cleanup mutual exclusion */
    mutex_t kb_cleanup_lock;
    /** True if cleanup of kbox has already started */
    bool kb_finished;
#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 3492	Rev 3593
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		56
-		57	#define TASK_NAME_BUFLEN 20
-		58
57	struct thread;	59	struct thread;
58		60
59	/** Task structure. */	61	/** Task structure. */
60	typedef struct task {	62	typedef struct task {
61	/** Task's linkage for the tasks_tree AVL tree. */	63	/** Task's linkage for the tasks_tree AVL tree. */
62	avltree_node_t tasks_tree_node;	64	avltree_node_t tasks_tree_node;
63		65
64	/** Task lock.	66	/** Task lock.
65	*	67	*
66	* Must be acquired before threads_lock and thread lock of any of its	68	* Must be acquired before threads_lock and thread lock of any of its
67	* threads.	69	* threads.
68	*/	70	*/
69	SPINLOCK_DECLARE(lock);	71	SPINLOCK_DECLARE(lock);
70		72
71	char *name;	73	char name[TASK_NAME_BUFLEN];
72	/** List of threads contained in this task. */	74	/** List of threads contained in this task. */
73	link_t th_head;	75	link_t th_head;
74	/** Address space. */	76	/** Address space. */
75	as_t *as;	77	as_t *as;
76	/** Unique identity of task. */	78	/** Unique identity of task. */
77	task_id_t taskid;	79	task_id_t taskid;
78	/** Task security context. */	80	/** Task security context. */
79	context_id_t context;	81	context_id_t context;
80		82
81	/** Number of references (i.e. threads). */	83	/** Number of references (i.e. threads). */
82	atomic_t refcount;	84	atomic_t refcount;
83	/** Number of threads that haven't exited yet. */	85	/** Number of threads that haven't exited yet. */
84	atomic_t lifecount;	86	atomic_t lifecount;
85		87
86	/** Task capabilities. */	88	/** Task capabilities. */
87	cap_t capabilities;	89	cap_t capabilities;
88		90
89	/* IPC stuff */	91	/* IPC stuff */
90	answerbox_t answerbox; /*< Communication endpoint /	92	answerbox_t answerbox; /*< Communication endpoint /
91	phone_t phones[IPC_MAX_PHONES];	93	phone_t phones[IPC_MAX_PHONES];
92	/**	94	/**
93	* Active asynchronous messages. It is used for limiting uspace to	95	* Active asynchronous messages. It is used for limiting uspace to
94	* certain extent.	96	* certain extent.
95	*/	97	*/
96	atomic_t active_calls;	98	atomic_t active_calls;
97		99
98	#ifdef CONFIG_UDEBUG	100	#ifdef CONFIG_UDEBUG
99	/** Debugging stuff */	101	/** Debugging stuff */
100	udebug_task_t udebug;	102	udebug_task_t udebug;
101		103
102	/** Kernel answerbox */	104	/** Kernel answerbox */
103	answerbox_t kernel_box;	105	answerbox_t kernel_box;
104	/** Thread used to service kernel answerbox */	106	/** Thread used to service kernel answerbox */
105	struct thread *kb_thread;	107	struct thread *kb_thread;
106	/** Kbox thread creation vs. begin of cleanup mutual exclusion */	108	/** Kbox thread creation vs. begin of cleanup mutual exclusion */
107	mutex_t kb_cleanup_lock;	109	mutex_t kb_cleanup_lock;
108	/** True if cleanup of kbox has already started */	110	/** True if cleanup of kbox has already started */
109	bool kb_finished;	111	bool kb_finished;
110	#endif	112	#endif
111		113
112	/** Architecture specific task data. */	114	/** Architecture specific task data. */
113	task_arch_t arch;	115	task_arch_t arch;
114		116
115	/**	117	/**
116	* Serializes access to the B+tree of task's futexes. This mutex is	118	* Serializes access to the B+tree of task's futexes. This mutex is
117	* independent on the task spinlock.	119	* independent on the task spinlock.
118	*/	120	*/
119	mutex_t futexes_lock;	121	mutex_t futexes_lock;
120	/** B+tree of futexes referenced by this task. */	122	/** B+tree of futexes referenced by this task. */
121	btree_t futexes;	123	btree_t futexes;
122		124
123	/** Accumulated accounting. */	125	/** Accumulated accounting. */
124	uint64_t cycles;	126	uint64_t cycles;
125	} task_t;	127	} task_t;
126		128
127	SPINLOCK_EXTERN(tasks_lock);	129	SPINLOCK_EXTERN(tasks_lock);
128	extern avltree_t tasks_tree;	130	extern avltree_t tasks_tree;
129		131
130	extern void task_init(void);	132	extern void task_init(void);
131	extern void task_done(void);	133	extern void task_done(void);
132	extern task_t task_create(as_t as, char *name);	134	extern task_t task_create(as_t as, char *name);
133	extern void task_destroy(task_t *t);	135	extern void task_destroy(task_t *t);
134	extern task_t *task_find_by_id(task_id_t id);	136	extern task_t *task_find_by_id(task_id_t id);
135	extern int task_kill(task_id_t id);	137	extern int task_kill(task_id_t id);
136	extern uint64_t task_get_accounting(task_t *t);	138	extern uint64_t task_get_accounting(task_t *t);
137		139
138	extern void cap_set(task_t *t, cap_t caps);	140	extern void cap_set(task_t *t, cap_t caps);
139	extern cap_t cap_get(task_t *t);	141	extern cap_t cap_get(task_t *t);
140		142
141	#ifndef task_create_arch	143	#ifndef task_create_arch
142	extern void task_create_arch(task_t *t);	144	extern void task_create_arch(task_t *t);
143	#endif	145	#endif
144		146
145	#ifndef task_destroy_arch	147	#ifndef task_destroy_arch
146	extern void task_destroy_arch(task_t *t);	148	extern void task_destroy_arch(task_t *t);
147	#endif	149	#endif
148		150
149	extern unative_t sys_task_get_id(task_id_t *uspace_task_id);	151	extern unative_t sys_task_get_id(task_id_t *uspace_task_id);
150		152
151	#endif	153	#endif
152		154
153	/** @}	155	/** @}
154	*/	156	*/
155		157

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(root)/branches/sparc/kernel/generic/include/proc/task.h – Rev 3492 → 3593