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 <cpu.h>
#include <ipc/ipc.h>
#include <synch/spinlock.h>
#include <synch/mutex.h>
#include <synch/rwlock.h>
#include <synch/futex.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>
 
struct thread;
 
/** Task structure. */
typedef struct task {
    /** Task lock.
     *
     * Must be acquired before threads_lock and thread lock of any of its
     * threads.
     */
    SPINLOCK_DECLARE(lock);
   
    char *name;
    /** Pointer to the main thread. */
    struct thread *main_thread;
    /** 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;  
 
    /** If this is true, new threads can become part of the task. */
    bool accept_new_threads;
    /** Number of references (i.e. threads). */
    count_t refcount;  
 
    /** 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;
   
    /** 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 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);
 
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 2106	Rev 2216
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/btree.h>	44	#include <adt/btree.h>
45	#include <adt/list.h>	45	#include <adt/list.h>
46	#include <security/cap.h>	46	#include <security/cap.h>
47	#include <arch/proc/task.h>	47	#include <arch/proc/task.h>
48	#include <arch/proc/thread.h>	48	#include <arch/proc/thread.h>
49	#include <arch/context.h>	49	#include <arch/context.h>
50	#include <arch/fpu_context.h>	50	#include <arch/fpu_context.h>
51	#include <arch/cpu.h>	51	#include <arch/cpu.h>
52	#include <mm/tlb.h>	52	#include <mm/tlb.h>
53	#include <proc/scheduler.h>	53	#include <proc/scheduler.h>
54		54
55	struct thread;	55	struct thread;
56		56
57	/** Task structure. */	57	/** Task structure. */
58	typedef struct task {	58	typedef struct task {
59	/** Task lock.	59	/** Task lock.
60	*	60	*
61	* Must be acquired before threads_lock and thread lock of any of its	61	* Must be acquired before threads_lock and thread lock of any of its
62	* threads.	62	* threads.
63	*/	63	*/
64	SPINLOCK_DECLARE(lock);	64	SPINLOCK_DECLARE(lock);
65		65
66	char *name;	66	char *name;
67	/** Pointer to the main thread. */	67	/** Pointer to the main thread. */
68	struct thread *main_thread;	68	struct thread *main_thread;
69	/** List of threads contained in this task. */	69	/** List of threads contained in this task. */
70	link_t th_head;	70	link_t th_head;
71	/** Address space. */	71	/** Address space. */
72	as_t *as;	72	as_t *as;
73	/** Unique identity of task. */	73	/** Unique identity of task. */
74	task_id_t taskid;	74	task_id_t taskid;
75	/** Task security context. */	75	/** Task security context. */
76	context_id_t context;	76	context_id_t context;
77		77
78	/** If this is true, new threads can become part of the task. */	78	/** If this is true, new threads can become part of the task. */
79	bool accept_new_threads;	79	bool accept_new_threads;
80	/** Number of references (i.e. threads). */	80	/** Number of references (i.e. threads). */
81	count_t refcount;	81	count_t refcount;
82		82
83	/** Task capabilities. */	83	/** Task capabilities. */
84	cap_t capabilities;	84	cap_t capabilities;
85		85
86	/* IPC stuff */	86	/* IPC stuff */
87	answerbox_t answerbox; /*< Communication endpoint /	87	answerbox_t answerbox; /*< Communication endpoint /
88	phone_t phones[IPC_MAX_PHONES];	88	phone_t phones[IPC_MAX_PHONES];
89	/**	89	/**
90	* Active asynchronous messages. It is used for limiting uspace to	90	* Active asynchronous messages. It is used for limiting uspace to
91	* certain extent.	91	* certain extent.
92	*/	92	*/
93	atomic_t active_calls;	93	atomic_t active_calls;
94		94
95	/** Architecture specific task data. */	95	/** Architecture specific task data. */
96	task_arch_t arch;	96	task_arch_t arch;
97		97
98	/**	98	/**
99	* Serializes access to the B+tree of task's futexes. This mutex is	99	* Serializes access to the B+tree of task's futexes. This mutex is
100	* independent on the task spinlock.	100	* independent on the task spinlock.
101	*/	101	*/
102	mutex_t futexes_lock;	102	mutex_t futexes_lock;
103	/** B+tree of futexes referenced by this task. */	103	/** B+tree of futexes referenced by this task. */
104	btree_t futexes;	104	btree_t futexes;
105		105
106	/** Accumulated accounting. */	106	/** Accumulated accounting. */
107	uint64_t cycles;	107	uint64_t cycles;
108	} task_t;	108	} task_t;
109		109
110	SPINLOCK_EXTERN(tasks_lock);	110	SPINLOCK_EXTERN(tasks_lock);
111	extern btree_t tasks_btree;	111	extern btree_t tasks_btree;
112		112
113	extern void task_init(void);	113	extern void task_init(void);
114	extern task_t task_create(as_t as, char *name);	114	extern task_t task_create(as_t as, char *name);
115	extern void task_destroy(task_t *t);	115	extern void task_destroy(task_t *t);
116	extern task_t task_run_program(void program_addr, char *name);	116	extern task_t task_run_program(void program_addr, char *name);
117	extern task_t *task_find_by_id(task_id_t id);	117	extern task_t *task_find_by_id(task_id_t id);
118	extern int task_kill(task_id_t id);	118	extern int task_kill(task_id_t id);
119	extern uint64_t task_get_accounting(task_t *t);	119	extern uint64_t task_get_accounting(task_t *t);
120		120
121	extern void cap_set(task_t *t, cap_t caps);	121	extern void cap_set(task_t *t, cap_t caps);
122	extern cap_t cap_get(task_t *t);	122	extern cap_t cap_get(task_t *t);
123		123
124		124
125	#ifndef task_create_arch	125	#ifndef task_create_arch
126	extern void task_create_arch(task_t *t);	126	extern void task_create_arch(task_t *t);
127	#endif	127	#endif
128		128
129	#ifndef task_destroy_arch	129	#ifndef task_destroy_arch
130	extern void task_destroy_arch(task_t *t);	130	extern void task_destroy_arch(task_t *t);
131	#endif	131	#endif
132		132
133	extern unative_t sys_task_get_id(task_id_t *uspace_task_id);	133	extern unative_t sys_task_get_id(task_id_t *uspace_task_id);
134		134
135	#endif	135	#endif
136		136
137	/** @}	137	/** @}
138	*/	138	*/
139		139

Subversion Repositories HelenOS

(root)/trunk/kernel/generic/include/proc/task.h – Rev 2106 → 2216