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