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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> |
- | |
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 |