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| Rev | Author | Line No. | Line |
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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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| 125 | jermar | 76 | fpu_context_t saved_fpu_context; |
| 77 | int fpu_context_exists; |
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| 78 | |||
| 79 | /* |
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| 80 | * Defined only if thread doesn't run. |
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| 81 | * It means that fpu context is in CPU that last time executes this thread. |
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| 82 | * This disables migration |
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| 83 | */ |
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| 84 | int fpu_context_engaged; |
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| 85 | |||
| 1 | jermar | 86 | waitq_t *sleep_queue; |
| 87 | timeout_t sleep_timeout; |
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| 88 | volatile int timeout_pending; |
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| 89 | |||
| 90 | rwlock_type_t rwlock_holder_type; |
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| 91 | void (* call_me)(void *); |
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| 92 | void *call_me_with; |
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| 93 | |||
| 94 | int state; |
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| 95 | int flags; |
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| 96 | |||
| 97 | cpu_t *cpu; |
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| 98 | task_t *task; |
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| 99 | |||
| 100 | __u64 ticks; |
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| 101 | |||
| 102 | __u32 tid; |
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| 103 | |||
| 104 | int pri; |
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| 105 | |||
| 106 | ARCH_THREAD_DATA; |
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| 107 | |||
| 108 | __u8 *kstack; |
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| 109 | __u8 *ustack; |
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| 110 | }; |
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| 111 | |||
| 112 | extern spinlock_t threads_lock; |
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| 113 | extern link_t threads_head; |
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| 114 | |||
| 115 | static void cushion(void); |
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| 116 | |||
| 117 | extern void thread_init(void); |
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| 118 | extern thread_t *thread_create(void (* func)(void *), void *arg, task_t *task, int flags); |
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| 119 | extern void thread_ready(thread_t *t); |
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| 120 | extern void thread_exit(void); |
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| 121 | |||
| 122 | extern void thread_sleep(__u32 sec); |
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| 123 | extern void thread_usleep(__u32 usec); |
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| 124 | |||
| 125 | extern void thread_register_call_me(void (* call_me)(void *), void *call_me_with); |
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| 126 | |||
| 127 | #endif |