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>
 
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;
   
    /** 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 *program_loader;
 
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_create_from_as(as_t *as, uintptr_t entry_addr, char *name, struct thread **t);
extern int task_parse_initial(void *program_addr, char *name, struct thread **t);
extern int task_create_from_loader(char *name, task_t **task);
extern void task_ready(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);
extern unative_t sys_task_spawn_loader(int *uspace_phone_id);
 
 
#endif
 
/** @}
 */
 

Rev 3149	Rev 3190
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		55
56	struct thread;	56	struct thread;
57		57
58	/** Task structure. */	58	/** Task structure. */
59	typedef struct task {	59	typedef struct task {
60	/** Task's linkage for the tasks_tree AVL tree. */	60	/** Task's linkage for the tasks_tree AVL tree. */
61	avltree_node_t tasks_tree_node;	61	avltree_node_t tasks_tree_node;
62		62
63	/** Task lock.	63	/** Task lock.
64	*	64	*
65	* Must be acquired before threads_lock and thread lock of any of its	65	* Must be acquired before threads_lock and thread lock of any of its
66	* threads.	66	* threads.
67	*/	67	*/
68	SPINLOCK_DECLARE(lock);	68	SPINLOCK_DECLARE(lock);
69		69
70	char *name;	70	char *name;
71	/** List of threads contained in this task. */	71	/** List of threads contained in this task. */
72	link_t th_head;	72	link_t th_head;
73	/** Address space. */	73	/** Address space. */
74	as_t *as;	74	as_t *as;
75	/** Unique identity of task. */	75	/** Unique identity of task. */
76	task_id_t taskid;	76	task_id_t taskid;
77	/** Task security context. */	77	/** Task security context. */
78	context_id_t context;	78	context_id_t context;
79		79
80	/** Number of references (i.e. threads). */	80	/** Number of references (i.e. threads). */
81	atomic_t refcount;	81	atomic_t refcount;
82	/** Number of threads that haven't exited yet. */	82	/** Number of threads that haven't exited yet. */
83	atomic_t lifecount;	83	atomic_t lifecount;
84		84
85	/** Task capabilities. */	85	/** Task capabilities. */
86	cap_t capabilities;	86	cap_t capabilities;
87		87
88	/* IPC stuff */	88	/* IPC stuff */
89	answerbox_t answerbox; /*< Communication endpoint /	89	answerbox_t answerbox; /*< Communication endpoint /
90	phone_t phones[IPC_MAX_PHONES];	90	phone_t phones[IPC_MAX_PHONES];
91	/**	91	/**
92	* Active asynchronous messages. It is used for limiting uspace to	92	* Active asynchronous messages. It is used for limiting uspace to
93	* certain extent.	93	* certain extent.
94	*/	94	*/
95	atomic_t active_calls;	95	atomic_t active_calls;
96		96
97	/** Architecture specific task data. */	97	/** Architecture specific task data. */
98	task_arch_t arch;	98	task_arch_t arch;
99		99
100	/**	100	/**
101	* Serializes access to the B+tree of task's futexes. This mutex is	101	* Serializes access to the B+tree of task's futexes. This mutex is
102	* independent on the task spinlock.	102	* independent on the task spinlock.
103	*/	103	*/
104	mutex_t futexes_lock;	104	mutex_t futexes_lock;
105	/** B+tree of futexes referenced by this task. */	105	/** B+tree of futexes referenced by this task. */
106	btree_t futexes;	106	btree_t futexes;
107		107
108	/** Accumulated accounting. */	108	/** Accumulated accounting. */
109	uint64_t cycles;	109	uint64_t cycles;
110	} task_t;	110	} task_t;
111		111
112	SPINLOCK_EXTERN(tasks_lock);	112	SPINLOCK_EXTERN(tasks_lock);
113	extern avltree_t tasks_tree;	113	extern avltree_t tasks_tree;
114		114
115	extern void *program_loader;	115	extern void *program_loader;
116		116
117	extern void task_init(void);	117	extern void task_init(void);
118	extern void task_done(void);	118	extern void task_done(void);
119	extern task_t task_create(as_t as, char *name);	119	extern task_t task_create(as_t as, char *name);
120	extern void task_destroy(task_t *t);	120	extern void task_destroy(task_t *t);
121	extern task_t task_create_from_as(as_t as, uintptr_t entry_addr, char name, struct thread *t);	121	extern task_t task_create_from_as(as_t as, uintptr_t entry_addr, char name, struct thread *t);
122	extern int task_parse_initial(void program_addr, char name, struct thread **t);	122	extern int task_parse_initial(void program_addr, char name, struct thread **t);
123	extern int task_create_from_loader(char name, task_t *task);	123	extern int task_create_from_loader(char name, task_t *task);
124	extern void task_ready(task_t *t);	124	extern void task_ready(task_t *t);
125	extern task_t *task_find_by_id(task_id_t id);	125	extern task_t *task_find_by_id(task_id_t id);
126	extern int task_kill(task_id_t id);	126	extern int task_kill(task_id_t id);
127	extern uint64_t task_get_accounting(task_t *t);	127	extern uint64_t task_get_accounting(task_t *t);
128		128
129		129
130	extern void cap_set(task_t *t, cap_t caps);	130	extern void cap_set(task_t *t, cap_t caps);
131	extern cap_t cap_get(task_t *t);	131	extern cap_t cap_get(task_t *t);
132		132
133	#ifndef task_create_arch	133	#ifndef task_create_arch
134	extern void task_create_arch(task_t *t);	134	extern void task_create_arch(task_t *t);
135	#endif	135	#endif
136		136
137	#ifndef task_destroy_arch	137	#ifndef task_destroy_arch
138	extern void task_destroy_arch(task_t *t);	138	extern void task_destroy_arch(task_t *t);
139	#endif	139	#endif
140		140
141	extern unative_t sys_task_get_id(task_id_t *uspace_task_id);	141	extern unative_t sys_task_get_id(task_id_t *uspace_task_id);
142	extern unative_t sys_task_spawn_loader(int *uspace_phone_id);	142	extern unative_t sys_task_spawn_loader(int *uspace_phone_id);
143	extern unative_t sys_task_spawn(void *image, size_t size);	-
144		143
145	#endif	144	#endif
146		145
147	/** @}	146	/** @}
148	*/	147	*/
149		148

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(root)/branches/dynload/kernel/generic/include/proc/task.h – Rev 3149 → 3190