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>
 
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;
    /** 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 3343	Rev 3492
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		56
56	struct thread;	57	struct thread;
57		58
58	/** Task structure. */	59	/** Task structure. */
59	typedef struct task {	60	typedef struct task {
60	/** Task's linkage for the tasks_tree AVL tree. */	61	/** Task's linkage for the tasks_tree AVL tree. */
61	avltree_node_t tasks_tree_node;	62	avltree_node_t tasks_tree_node;
62		63
63	/** Task lock.	64	/** Task lock.
64	*	65	*
65	* Must be acquired before threads_lock and thread lock of any of its	66	* Must be acquired before threads_lock and thread lock of any of its
66	* threads.	67	* threads.
67	*/	68	*/
68	SPINLOCK_DECLARE(lock);	69	SPINLOCK_DECLARE(lock);
69		70
70	char *name;	71	char *name;
71	/** List of threads contained in this task. */	72	/** List of threads contained in this task. */
72	link_t th_head;	73	link_t th_head;
73	/** Address space. */	74	/** Address space. */
74	as_t *as;	75	as_t *as;
75	/** Unique identity of task. */	76	/** Unique identity of task. */
76	task_id_t taskid;	77	task_id_t taskid;
77	/** Task security context. */	78	/** Task security context. */
78	context_id_t context;	79	context_id_t context;
79		80
80	/** Number of references (i.e. threads). */	81	/** Number of references (i.e. threads). */
81	atomic_t refcount;	82	atomic_t refcount;
82	/** Number of threads that haven't exited yet. */	83	/** Number of threads that haven't exited yet. */
83	atomic_t lifecount;	84	atomic_t lifecount;
84		85
85	/** Task capabilities. */	86	/** Task capabilities. */
86	cap_t capabilities;	87	cap_t capabilities;
87		88
88	/* IPC stuff */	89	/* IPC stuff */
89	answerbox_t answerbox; /*< Communication endpoint /	90	answerbox_t answerbox; /*< Communication endpoint /
90	phone_t phones[IPC_MAX_PHONES];	91	phone_t phones[IPC_MAX_PHONES];
91	/**	92	/**
92	* Active asynchronous messages. It is used for limiting uspace to	93	* Active asynchronous messages. It is used for limiting uspace to
93	* certain extent.	94	* certain extent.
94	*/	95	*/
95	atomic_t active_calls;	96	atomic_t active_calls;
-		97
-		98	#ifdef CONFIG_UDEBUG
-		99	/** Debugging stuff */
-		100	udebug_task_t udebug;
-		101
-		102	/** Kernel answerbox */
-		103	answerbox_t kernel_box;
-		104	/** Thread used to service kernel answerbox */
-		105	struct thread *kb_thread;
-		106	/** Kbox thread creation vs. begin of cleanup mutual exclusion */
-		107	mutex_t kb_cleanup_lock;
-		108	/** True if cleanup of kbox has already started */
-		109	bool kb_finished;
-		110	#endif
96		111
97	/** Architecture specific task data. */	112	/** Architecture specific task data. */
98	task_arch_t arch;	113	task_arch_t arch;
99		114
100	/**	115	/**
101	* Serializes access to the B+tree of task's futexes. This mutex is	116	* Serializes access to the B+tree of task's futexes. This mutex is
102	* independent on the task spinlock.	117	* independent on the task spinlock.
103	*/	118	*/
104	mutex_t futexes_lock;	119	mutex_t futexes_lock;
105	/** B+tree of futexes referenced by this task. */	120	/** B+tree of futexes referenced by this task. */
106	btree_t futexes;	121	btree_t futexes;
107		122
108	/** Accumulated accounting. */	123	/** Accumulated accounting. */
109	uint64_t cycles;	124	uint64_t cycles;
110	} task_t;	125	} task_t;
111		126
112	SPINLOCK_EXTERN(tasks_lock);	127	SPINLOCK_EXTERN(tasks_lock);
113	extern avltree_t tasks_tree;	128	extern avltree_t tasks_tree;
114		129
115	extern void task_init(void);	130	extern void task_init(void);
116	extern void task_done(void);	131	extern void task_done(void);
117	extern task_t task_create(as_t as, char *name);	132	extern task_t task_create(as_t as, char *name);
118	extern void task_destroy(task_t *t);	133	extern void task_destroy(task_t *t);
119	extern task_t *task_find_by_id(task_id_t id);	134	extern task_t *task_find_by_id(task_id_t id);
120	extern int task_kill(task_id_t id);	135	extern int task_kill(task_id_t id);
121	extern uint64_t task_get_accounting(task_t *t);	136	extern uint64_t task_get_accounting(task_t *t);
122		137
123	extern void cap_set(task_t *t, cap_t caps);	138	extern void cap_set(task_t *t, cap_t caps);
124	extern cap_t cap_get(task_t *t);	139	extern cap_t cap_get(task_t *t);
125		140
126	#ifndef task_create_arch	141	#ifndef task_create_arch
127	extern void task_create_arch(task_t *t);	142	extern void task_create_arch(task_t *t);
128	#endif	143	#endif
129		144
130	#ifndef task_destroy_arch	145	#ifndef task_destroy_arch
131	extern void task_destroy_arch(task_t *t);	146	extern void task_destroy_arch(task_t *t);
132	#endif	147	#endif
133		148
134	extern unative_t sys_task_get_id(task_id_t *uspace_task_id);	149	extern unative_t sys_task_get_id(task_id_t *uspace_task_id);
135		150
136	#endif	151	#endif
137		152
138	/** @}	153	/** @}
139	*/	154	*/
140		155

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