WebSVN – HelenOS-historic – Diff – /kernel/trunk/generic/include/proc/thread.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.
 */
 
#ifndef __THREAD_H__
#define __THREAD_H__
 
#include <arch/thread.h>
 
#include <synch/spinlock.h>
#include <arch/context.h>
#include <fpu_context.h>
#include <arch/types.h>
#include <typedefs.h>
#include <time/timeout.h>
#include <synch/rwlock.h>
 
#include <config.h>
#include <list.h>
 
#define THREAD_STACK_SIZE   STACK_SIZE
 
#define THREAD_USER_STACK   1
 
enum state {
    Invalid,
    Running,
    Sleeping,
    Ready,
    Entering,
    Exiting
};
 
extern char *thread_states[];
 
#define X_WIRED     (1<<0)
#define X_STOLEN    (1<<1)
 
struct thread {
    link_t rq_link;             /* run queue link */
    link_t wq_link;             /* wait queue link */
    link_t th_link;             /* links to threads within the parent task*/
    link_t threads_link;
   
    /* items below are protected by lock */
    spinlock_t lock;
 
    void (* thread_code)(void *);
    void *thread_arg;
 
    context_t saved_context;
    context_t sleep_timeout_context;
    fpu_context_t saved_fpu_context;
    int fpu_context_exists;
 
    /*
     * Defined only if thread doesn't run.
     * It means that fpu context is in CPU that last time executes this thread.
     * This disables migration
     */
    int fpu_context_engaged;
 
    waitq_t *sleep_queue;
    timeout_t sleep_timeout;
    volatile int timeout_pending;
 
    rwlock_type_t rwlock_holder_type;
    void (* call_me)(void *);
    void *call_me_with;
 
    int state;
    int flags;
   
    cpu_t *cpu;
    task_t *task;
 
    __u64 ticks;
 
    __u32 tid;
   
    int pri;
   
    ARCH_THREAD_DATA;
 
    __u8 *kstack;
    __u8 *ustack;
};
 
extern spinlock_t threads_lock;
extern link_t threads_head;
 
static void cushion(void);
 
extern void thread_init(void);
extern thread_t *thread_create(void (* func)(void *), void *arg, task_t *task, int flags);
extern void thread_ready(thread_t *t);
extern void thread_exit(void);
 
extern void thread_sleep(__u32 sec);
extern void thread_usleep(__u32 usec);
 
extern void thread_register_call_me(void (* call_me)(void *), void *call_me_with);
 
#endif
 

Rev 173	Rev 177
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	#ifndef __THREAD_H__	29	#ifndef __THREAD_H__
30	#define __THREAD_H__	30	#define __THREAD_H__
31		31
32	#include <arch/thread.h>	32	#include <arch/thread.h>
33	#include <proc/task.h>	-
34	#include <synch/spinlock.h>	33	#include <synch/spinlock.h>
35	#include <arch/context.h>	34	#include <arch/context.h>
36	#include <fpu_context.h>	35	#include <fpu_context.h>
37	#include <arch/types.h>	36	#include <arch/types.h>
38	#include <typedefs.h>	37	#include <typedefs.h>
39	#include <time/timeout.h>	38	#include <time/timeout.h>
40	#include <synch/rwlock.h>	39	#include <synch/rwlock.h>
41	#include <mm/page.h>	-
42	#include <config.h>	40	#include <config.h>
43	#include <list.h>	41	#include <list.h>
44		42
45	#define THREAD_STACK_SIZE STACK_SIZE	43	#define THREAD_STACK_SIZE STACK_SIZE
46		44
47	#define THREAD_USER_STACK 1	45	#define THREAD_USER_STACK 1
48		46
49	enum state {	47	enum state {
50	Invalid,	48	Invalid,
51	Running,	49	Running,
52	Sleeping,	50	Sleeping,
53	Ready,	51	Ready,
54	Entering,	52	Entering,
55	Exiting	53	Exiting
56	};	54	};
57		55
58	extern char *thread_states[];	56	extern char *thread_states[];
59		57
60	#define X_WIRED (1<<0)	58	#define X_WIRED (1<<0)
61	#define X_STOLEN (1<<1)	59	#define X_STOLEN (1<<1)
62		60
63	struct thread {	61	struct thread {
64	link_t rq_link; /* run queue link */	62	link_t rq_link; /* run queue link */
65	link_t wq_link; /* wait queue link */	63	link_t wq_link; /* wait queue link */
66	link_t th_link; /* links to threads within the parent task*/	64	link_t th_link; /* links to threads within the parent task*/
67	link_t threads_link;	65	link_t threads_link;
68		66
69	/* items below are protected by lock */	67	/* items below are protected by lock */
70	spinlock_t lock;	68	spinlock_t lock;
71		69
72	void (* thread_code)(void *);	70	void (* thread_code)(void *);
73	void *thread_arg;	71	void *thread_arg;
74		72
75	context_t saved_context;	73	context_t saved_context;
76	context_t sleep_timeout_context;	74	context_t sleep_timeout_context;
77	fpu_context_t saved_fpu_context;	75	fpu_context_t saved_fpu_context;
78	int fpu_context_exists;	76	int fpu_context_exists;
79		77
80	/*	78	/*
81	* Defined only if thread doesn't run.	79	* Defined only if thread doesn't run.
82	* It means that fpu context is in CPU that last time executes this thread.	80	* It means that fpu context is in CPU that last time executes this thread.
83	* This disables migration	81	* This disables migration
84	*/	82	*/
85	int fpu_context_engaged;	83	int fpu_context_engaged;
86		84
87	waitq_t *sleep_queue;	85	waitq_t *sleep_queue;
88	timeout_t sleep_timeout;	86	timeout_t sleep_timeout;
89	volatile int timeout_pending;	87	volatile int timeout_pending;
90		88
91	rwlock_type_t rwlock_holder_type;	89	rwlock_type_t rwlock_holder_type;
92	void (* call_me)(void *);	90	void (* call_me)(void *);
93	void *call_me_with;	91	void *call_me_with;
94		92
95	int state;	93	int state;
96	int flags;	94	int flags;
97		95
98	cpu_t *cpu;	96	cpu_t *cpu;
99	task_t *task;	97	task_t *task;
100		98
101	__u64 ticks;	99	__u64 ticks;
102		100
103	__u32 tid;	101	__u32 tid;
104		102
105	int pri;	103	int pri;
106		104
107	ARCH_THREAD_DATA;	105	ARCH_THREAD_DATA;
108		106
109	__u8 *kstack;	107	__u8 *kstack;
110	__u8 *ustack;	108	__u8 *ustack;
111	};	109	};
112		110
113	extern spinlock_t threads_lock;	111	extern spinlock_t threads_lock;
114	extern link_t threads_head;	112	extern link_t threads_head;
115		113
116	static void cushion(void);	114	static void cushion(void);
117		115
118	extern void thread_init(void);	116	extern void thread_init(void);
119	extern thread_t thread_create(void ( func)(void ), void arg, task_t *task, int flags);	117	extern thread_t thread_create(void ( func)(void ), void arg, task_t *task, int flags);
120	extern void thread_ready(thread_t *t);	118	extern void thread_ready(thread_t *t);
121	extern void thread_exit(void);	119	extern void thread_exit(void);
122		120
123	extern void thread_sleep(__u32 sec);	121	extern void thread_sleep(__u32 sec);
124	extern void thread_usleep(__u32 usec);	122	extern void thread_usleep(__u32 usec);
125		123
126	extern void thread_register_call_me(void (* call_me)(void ), void call_me_with);	124	extern void thread_register_call_me(void (* call_me)(void ), void call_me_with);
127		125
128	#endif	126	#endif
129		127

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/include/proc/thread.h @ 1754 – Rev 173 → 177