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1 | jermar | 1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | #ifndef __THREAD_H__ |
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30 | #define __THREAD_H__ |
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31 | |||
32 | #include <arch/thread.h> |
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33 | #include <proc/task.h> |
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34 | #include <synch/spinlock.h> |
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35 | #include <arch/context.h> |
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56 | vana | 36 | #include <fpu_context.h> |
1 | jermar | 37 | #include <arch/types.h> |
38 | #include <typedefs.h> |
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39 | #include <time/timeout.h> |
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40 | #include <synch/rwlock.h> |
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41 | #include <mm/page.h> |
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42 | #include <list.h> |
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43 | |||
44 | #define THREAD_STACK_SIZE PAGE_SIZE |
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45 | |||
46 | #define THREAD_USER_STACK 1 |
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47 | |||
48 | enum state { |
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49 | Invalid, |
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50 | Running, |
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51 | Sleeping, |
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52 | Ready, |
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53 | Entering, |
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54 | Exiting |
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55 | }; |
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56 | |||
57 | extern char *thread_states[]; |
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58 | |||
59 | #define X_WIRED (1<<0) |
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60 | #define X_STOLEN (1<<1) |
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61 | |||
62 | struct thread { |
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63 | link_t rq_link; /* run queue link */ |
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64 | link_t wq_link; /* wait queue link */ |
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65 | link_t th_link; /* links to threads within the parent task*/ |
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66 | link_t threads_link; |
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67 | |||
68 | /* items below are protected by lock */ |
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69 | spinlock_t lock; |
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70 | |||
71 | void (* thread_code)(void *); |
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72 | void *thread_arg; |
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73 | |||
74 | context_t saved_context; |
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75 | context_t sleep_timeout_context; |
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57 | vana | 76 | fpu_context_t saved_fpu_context; |
46 | vana | 77 | |
78 | |||
1 | jermar | 79 | waitq_t *sleep_queue; |
80 | timeout_t sleep_timeout; |
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81 | volatile int timeout_pending; |
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82 | |||
83 | rwlock_type_t rwlock_holder_type; |
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84 | void (* call_me)(void *); |
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85 | void *call_me_with; |
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86 | |||
87 | int state; |
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88 | int flags; |
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89 | |||
90 | cpu_t *cpu; |
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91 | task_t *task; |
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92 | |||
93 | __u64 ticks; |
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94 | |||
95 | __u32 tid; |
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96 | |||
97 | int pri; |
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98 | |||
99 | ARCH_THREAD_DATA; |
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100 | |||
101 | __u8 *kstack; |
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102 | __u8 *ustack; |
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103 | }; |
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104 | |||
105 | extern spinlock_t threads_lock; |
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106 | extern link_t threads_head; |
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107 | |||
108 | static void cushion(void); |
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109 | |||
110 | extern void thread_init(void); |
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111 | extern thread_t *thread_create(void (* func)(void *), void *arg, task_t *task, int flags); |
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112 | extern void thread_ready(thread_t *t); |
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113 | extern void thread_exit(void); |
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114 | |||
115 | extern void thread_sleep(__u32 sec); |
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116 | extern void thread_usleep(__u32 usec); |
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117 | |||
118 | extern void thread_register_call_me(void (* call_me)(void *), void *call_me_with); |
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119 | |||
120 | #endif |