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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 | #include <proc/scheduler.h> |
29 | #include <proc/scheduler.h> |
30 | #include <proc/thread.h> |
30 | #include <proc/thread.h> |
31 | #include <proc/task.h> |
31 | #include <proc/task.h> |
32 | #include <mm/heap.h> |
- | |
33 | #include <mm/frame.h> |
32 | #include <mm/frame.h> |
34 | #include <mm/page.h> |
33 | #include <mm/page.h> |
35 | #include <arch/asm.h> |
34 | #include <arch/asm.h> |
36 | #include <arch.h> |
35 | #include <arch.h> |
37 | #include <synch/synch.h> |
36 | #include <synch/synch.h> |
38 | #include <synch/spinlock.h> |
37 | #include <synch/spinlock.h> |
39 | #include <synch/waitq.h> |
38 | #include <synch/waitq.h> |
40 | #include <synch/rwlock.h> |
39 | #include <synch/rwlock.h> |
41 | #include <cpu.h> |
40 | #include <cpu.h> |
42 | #include <func.h> |
41 | #include <func.h> |
43 | #include <context.h> |
42 | #include <context.h> |
44 | #include <adt/list.h> |
43 | #include <adt/list.h> |
45 | #include <typedefs.h> |
44 | #include <typedefs.h> |
46 | #include <time/clock.h> |
45 | #include <time/clock.h> |
47 | #include <adt/list.h> |
46 | #include <adt/list.h> |
48 | #include <config.h> |
47 | #include <config.h> |
49 | #include <arch/interrupt.h> |
48 | #include <arch/interrupt.h> |
50 | #include <smp/ipi.h> |
49 | #include <smp/ipi.h> |
51 | #include <arch/faddr.h> |
50 | #include <arch/faddr.h> |
52 | #include <arch/atomic.h> |
51 | #include <arch/atomic.h> |
53 | #include <memstr.h> |
52 | #include <memstr.h> |
54 | #include <print.h> |
53 | #include <print.h> |
55 | #include <mm/slab.h> |
54 | #include <mm/slab.h> |
56 | #include <debug.h> |
55 | #include <debug.h> |
57 | 56 | ||
58 | char *thread_states[] = {"Invalid", "Running", "Sleeping", "Ready", "Entering", "Exiting"}; /**< Thread states */ |
57 | char *thread_states[] = {"Invalid", "Running", "Sleeping", "Ready", "Entering", "Exiting"}; /**< Thread states */ |
59 | 58 | ||
60 | SPINLOCK_INITIALIZE(threads_lock); /**< Lock protecting threads_head list. For locking rules, see declaration thereof. */ |
59 | SPINLOCK_INITIALIZE(threads_lock); /**< Lock protecting threads_head list. For locking rules, see declaration thereof. */ |
61 | LIST_INITIALIZE(threads_head); /**< List of all threads. */ |
60 | LIST_INITIALIZE(threads_head); /**< List of all threads. */ |
62 | 61 | ||
63 | SPINLOCK_INITIALIZE(tidlock); |
62 | SPINLOCK_INITIALIZE(tidlock); |
64 | __u32 last_tid = 0; |
63 | __u32 last_tid = 0; |
65 | 64 | ||
66 | static slab_cache_t *thread_slab; |
65 | static slab_cache_t *thread_slab; |
67 | 66 | ||
68 | 67 | ||
69 | /** Thread wrapper |
68 | /** Thread wrapper |
70 | * |
69 | * |
71 | * This wrapper is provided to ensure that every thread |
70 | * This wrapper is provided to ensure that every thread |
72 | * makes a call to thread_exit() when its implementing |
71 | * makes a call to thread_exit() when its implementing |
73 | * function returns. |
72 | * function returns. |
74 | * |
73 | * |
75 | * interrupts_disable() is assumed. |
74 | * interrupts_disable() is assumed. |
76 | * |
75 | * |
77 | */ |
76 | */ |
78 | static void cushion(void) |
77 | static void cushion(void) |
79 | { |
78 | { |
80 | void (*f)(void *) = THREAD->thread_code; |
79 | void (*f)(void *) = THREAD->thread_code; |
81 | void *arg = THREAD->thread_arg; |
80 | void *arg = THREAD->thread_arg; |
82 | 81 | ||
83 | /* this is where each thread wakes up after its creation */ |
82 | /* this is where each thread wakes up after its creation */ |
84 | before_thread_runs(); |
83 | before_thread_runs(); |
85 | 84 | ||
86 | spinlock_unlock(&THREAD->lock); |
85 | spinlock_unlock(&THREAD->lock); |
87 | interrupts_enable(); |
86 | interrupts_enable(); |
88 | 87 | ||
89 | f(arg); |
88 | f(arg); |
90 | thread_exit(); |
89 | thread_exit(); |
91 | /* not reached */ |
90 | /* not reached */ |
92 | } |
91 | } |
93 | 92 | ||
94 | /** Initialization and allocation for thread_t structure */ |
93 | /** Initialization and allocation for thread_t structure */ |
95 | static int thr_constructor(void *obj, int kmflags) |
94 | static int thr_constructor(void *obj, int kmflags) |
96 | { |
95 | { |
97 | thread_t *t = (thread_t *)obj; |
96 | thread_t *t = (thread_t *)obj; |
- | 97 | pfn_t pfn; |
|
98 | 98 | ||
99 | spinlock_initialize(&t->lock, "thread_t_lock"); |
99 | spinlock_initialize(&t->lock, "thread_t_lock"); |
100 | link_initialize(&t->rq_link); |
100 | link_initialize(&t->rq_link); |
101 | link_initialize(&t->wq_link); |
101 | link_initialize(&t->wq_link); |
102 | link_initialize(&t->th_link); |
102 | link_initialize(&t->th_link); |
103 | link_initialize(&t->threads_link); |
103 | link_initialize(&t->threads_link); |
104 | 104 | ||
105 | t->kstack = (__u8 *)frame_alloc(ONE_FRAME, FRAME_KA | kmflags); |
105 | pfn = frame_alloc(ONE_FRAME, FRAME_KA | kmflags); |
- | 106 | t->kstack = (__u8 *)PA2KA(PFN2ADDR(pfn)); |
|
106 | if (!t->kstack) |
107 | if (!t->kstack) |
107 | return -1; |
108 | return -1; |
108 | 109 | ||
109 | return 0; |
110 | return 0; |
110 | } |
111 | } |
111 | 112 | ||
112 | /** Destruction of thread_t object */ |
113 | /** Destruction of thread_t object */ |
113 | static int thr_destructor(void *obj) |
114 | static int thr_destructor(void *obj) |
114 | { |
115 | { |
115 | thread_t *t = (thread_t *)obj; |
116 | thread_t *t = (thread_t *)obj; |
116 | 117 | ||
117 | frame_free((__address) t->kstack); |
118 | frame_free(ADDR2PFN(KA2PA(t->kstack))); |
118 | return 1; /* One page freed */ |
119 | return 1; /* One page freed */ |
119 | } |
120 | } |
120 | 121 | ||
121 | /** Initialize threads |
122 | /** Initialize threads |
122 | * |
123 | * |
123 | * Initialize kernel threads support. |
124 | * Initialize kernel threads support. |
124 | * |
125 | * |
125 | */ |
126 | */ |
126 | void thread_init(void) |
127 | void thread_init(void) |
127 | { |
128 | { |
128 | THREAD = NULL; |
129 | THREAD = NULL; |
129 | atomic_set(&nrdy,0); |
130 | atomic_set(&nrdy,0); |
130 | thread_slab = slab_cache_create("thread_slab", |
131 | thread_slab = slab_cache_create("thread_slab", |
131 | sizeof(thread_t),0, |
132 | sizeof(thread_t),0, |
132 | thr_constructor, thr_destructor, 0); |
133 | thr_constructor, thr_destructor, 0); |
133 | } |
134 | } |
134 | 135 | ||
135 | 136 | ||
136 | /** Make thread ready |
137 | /** Make thread ready |
137 | * |
138 | * |
138 | * Switch thread t to the ready state. |
139 | * Switch thread t to the ready state. |
139 | * |
140 | * |
140 | * @param t Thread to make ready. |
141 | * @param t Thread to make ready. |
141 | * |
142 | * |
142 | */ |
143 | */ |
143 | void thread_ready(thread_t *t) |
144 | void thread_ready(thread_t *t) |
144 | { |
145 | { |
145 | cpu_t *cpu; |
146 | cpu_t *cpu; |
146 | runq_t *r; |
147 | runq_t *r; |
147 | ipl_t ipl; |
148 | ipl_t ipl; |
148 | int i, avg; |
149 | int i, avg; |
149 | 150 | ||
150 | ipl = interrupts_disable(); |
151 | ipl = interrupts_disable(); |
151 | 152 | ||
152 | spinlock_lock(&t->lock); |
153 | spinlock_lock(&t->lock); |
153 | 154 | ||
154 | i = (t->priority < RQ_COUNT -1) ? ++t->priority : t->priority; |
155 | i = (t->priority < RQ_COUNT -1) ? ++t->priority : t->priority; |
155 | 156 | ||
156 | cpu = CPU; |
157 | cpu = CPU; |
157 | if (t->flags & X_WIRED) { |
158 | if (t->flags & X_WIRED) { |
158 | cpu = t->cpu; |
159 | cpu = t->cpu; |
159 | } |
160 | } |
160 | spinlock_unlock(&t->lock); |
161 | spinlock_unlock(&t->lock); |
161 | 162 | ||
162 | /* |
163 | /* |
163 | * Append t to respective ready queue on respective processor. |
164 | * Append t to respective ready queue on respective processor. |
164 | */ |
165 | */ |
165 | r = &cpu->rq[i]; |
166 | r = &cpu->rq[i]; |
166 | spinlock_lock(&r->lock); |
167 | spinlock_lock(&r->lock); |
167 | list_append(&t->rq_link, &r->rq_head); |
168 | list_append(&t->rq_link, &r->rq_head); |
168 | r->n++; |
169 | r->n++; |
169 | spinlock_unlock(&r->lock); |
170 | spinlock_unlock(&r->lock); |
170 | 171 | ||
171 | atomic_inc(&nrdy); |
172 | atomic_inc(&nrdy); |
172 | avg = atomic_get(&nrdy) / config.cpu_active; |
173 | avg = atomic_get(&nrdy) / config.cpu_active; |
173 | atomic_inc(&cpu->nrdy); |
174 | atomic_inc(&cpu->nrdy); |
174 | 175 | ||
175 | interrupts_restore(ipl); |
176 | interrupts_restore(ipl); |
176 | } |
177 | } |
177 | 178 | ||
178 | 179 | ||
179 | /** Destroy thread memory structure |
180 | /** Destroy thread memory structure |
180 | * |
181 | * |
181 | * Detach thread from all queues, cpus etc. and destroy it. |
182 | * Detach thread from all queues, cpus etc. and destroy it. |
182 | * |
183 | * |
183 | * Assume thread->lock is held!! |
184 | * Assume thread->lock is held!! |
184 | */ |
185 | */ |
185 | void thread_destroy(thread_t *t) |
186 | void thread_destroy(thread_t *t) |
186 | { |
187 | { |
187 | ASSERT(t->state == Exiting); |
188 | ASSERT(t->state == Exiting); |
188 | ASSERT(t->task); |
189 | ASSERT(t->task); |
189 | ASSERT(t->cpu); |
190 | ASSERT(t->cpu); |
190 | 191 | ||
191 | spinlock_lock(&t->cpu->lock); |
192 | spinlock_lock(&t->cpu->lock); |
192 | if(t->cpu->fpu_owner==t) |
193 | if(t->cpu->fpu_owner==t) |
193 | t->cpu->fpu_owner=NULL; |
194 | t->cpu->fpu_owner=NULL; |
194 | spinlock_unlock(&t->cpu->lock); |
195 | spinlock_unlock(&t->cpu->lock); |
195 | 196 | ||
196 | if (t->ustack) |
- | |
197 | frame_free((__address) t->ustack); |
- | |
198 | - | ||
199 | /* |
197 | /* |
200 | * Detach from the containing task. |
198 | * Detach from the containing task. |
201 | */ |
199 | */ |
202 | spinlock_lock(&t->task->lock); |
200 | spinlock_lock(&t->task->lock); |
203 | list_remove(&t->th_link); |
201 | list_remove(&t->th_link); |
204 | spinlock_unlock(&t->task->lock); |
202 | spinlock_unlock(&t->task->lock); |
205 | 203 | ||
206 | spinlock_unlock(&t->lock); |
204 | spinlock_unlock(&t->lock); |
207 | 205 | ||
208 | spinlock_lock(&threads_lock); |
206 | spinlock_lock(&threads_lock); |
209 | list_remove(&t->threads_link); |
207 | list_remove(&t->threads_link); |
210 | spinlock_unlock(&threads_lock); |
208 | spinlock_unlock(&threads_lock); |
211 | 209 | ||
212 | slab_free(thread_slab, t); |
210 | slab_free(thread_slab, t); |
213 | } |
211 | } |
214 | 212 | ||
215 | 213 | ||
216 | /** Create new thread |
214 | /** Create new thread |
217 | * |
215 | * |
218 | * Create a new thread. |
216 | * Create a new thread. |
219 | * |
217 | * |
220 | * @param func Thread's implementing function. |
218 | * @param func Thread's implementing function. |
221 | * @param arg Thread's implementing function argument. |
219 | * @param arg Thread's implementing function argument. |
222 | * @param task Task to which the thread belongs. |
220 | * @param task Task to which the thread belongs. |
223 | * @param flags Thread flags. |
221 | * @param flags Thread flags. |
224 | * |
222 | * |
225 | * @return New thread's structure on success, NULL on failure. |
223 | * @return New thread's structure on success, NULL on failure. |
226 | * |
224 | * |
227 | */ |
225 | */ |
228 | thread_t *thread_create(void (* func)(void *), void *arg, task_t *task, int flags) |
226 | thread_t *thread_create(void (* func)(void *), void *arg, task_t *task, int flags) |
229 | { |
227 | { |
230 | thread_t *t; |
228 | thread_t *t; |
231 | __address frame_us = NULL; |
- | |
232 | 229 | ||
233 | t = (thread_t *) slab_alloc(thread_slab, 0); |
230 | t = (thread_t *) slab_alloc(thread_slab, 0); |
234 | if (t) { |
231 | if (t) { |
235 | ipl_t ipl; |
232 | ipl_t ipl; |
236 | 233 | ||
237 | if (THREAD_USER_STACK & flags) { |
- | |
238 | frame_us = frame_alloc(ONE_FRAME, FRAME_KA); |
- | |
239 | } |
- | |
240 | - | ||
241 | /* Not needed, but good for debugging */ |
234 | /* Not needed, but good for debugging */ |
242 | memsetb((__address)t->kstack, THREAD_STACK_SIZE, 0); |
235 | memsetb((__address)t->kstack, THREAD_STACK_SIZE, 0); |
243 | 236 | ||
244 | ipl = interrupts_disable(); |
237 | ipl = interrupts_disable(); |
245 | spinlock_lock(&tidlock); |
238 | spinlock_lock(&tidlock); |
246 | t->tid = ++last_tid; |
239 | t->tid = ++last_tid; |
247 | spinlock_unlock(&tidlock); |
240 | spinlock_unlock(&tidlock); |
248 | interrupts_restore(ipl); |
241 | interrupts_restore(ipl); |
249 | 242 | ||
250 | t->ustack = (__u8 *) frame_us; |
- | |
251 | - | ||
252 | context_save(&t->saved_context); |
243 | context_save(&t->saved_context); |
253 | context_set(&t->saved_context, FADDR(cushion), (__address) t->kstack, THREAD_STACK_SIZE); |
244 | context_set(&t->saved_context, FADDR(cushion), (__address) t->kstack, THREAD_STACK_SIZE); |
254 | 245 | ||
255 | the_initialize((the_t *) t->kstack); |
246 | the_initialize((the_t *) t->kstack); |
256 | 247 | ||
257 | ipl = interrupts_disable(); |
248 | ipl = interrupts_disable(); |
258 | t->saved_context.ipl = interrupts_read(); |
249 | t->saved_context.ipl = interrupts_read(); |
259 | interrupts_restore(ipl); |
250 | interrupts_restore(ipl); |
260 | 251 | ||
261 | t->thread_code = func; |
252 | t->thread_code = func; |
262 | t->thread_arg = arg; |
253 | t->thread_arg = arg; |
263 | t->ticks = -1; |
254 | t->ticks = -1; |
264 | t->priority = -1; /* start in rq[0] */ |
255 | t->priority = -1; /* start in rq[0] */ |
265 | t->cpu = NULL; |
256 | t->cpu = NULL; |
266 | t->flags = 0; |
257 | t->flags = 0; |
267 | t->state = Entering; |
258 | t->state = Entering; |
268 | t->call_me = NULL; |
259 | t->call_me = NULL; |
269 | t->call_me_with = NULL; |
260 | t->call_me_with = NULL; |
270 | 261 | ||
271 | timeout_initialize(&t->sleep_timeout); |
262 | timeout_initialize(&t->sleep_timeout); |
272 | t->sleep_queue = NULL; |
263 | t->sleep_queue = NULL; |
273 | t->timeout_pending = 0; |
264 | t->timeout_pending = 0; |
274 | 265 | ||
275 | t->rwlock_holder_type = RWLOCK_NONE; |
266 | t->rwlock_holder_type = RWLOCK_NONE; |
276 | 267 | ||
277 | t->task = task; |
268 | t->task = task; |
278 | 269 | ||
279 | t->fpu_context_exists=0; |
270 | t->fpu_context_exists=0; |
280 | t->fpu_context_engaged=0; |
271 | t->fpu_context_engaged=0; |
281 | 272 | ||
282 | /* |
273 | /* |
283 | * Register this thread in the system-wide list. |
274 | * Register this thread in the system-wide list. |
284 | */ |
275 | */ |
285 | ipl = interrupts_disable(); |
276 | ipl = interrupts_disable(); |
286 | spinlock_lock(&threads_lock); |
277 | spinlock_lock(&threads_lock); |
287 | list_append(&t->threads_link, &threads_head); |
278 | list_append(&t->threads_link, &threads_head); |
288 | spinlock_unlock(&threads_lock); |
279 | spinlock_unlock(&threads_lock); |
289 | 280 | ||
290 | /* |
281 | /* |
291 | * Attach to the containing task. |
282 | * Attach to the containing task. |
292 | */ |
283 | */ |
293 | spinlock_lock(&task->lock); |
284 | spinlock_lock(&task->lock); |
294 | list_append(&t->th_link, &task->th_head); |
285 | list_append(&t->th_link, &task->th_head); |
295 | spinlock_unlock(&task->lock); |
286 | spinlock_unlock(&task->lock); |
296 | 287 | ||
297 | interrupts_restore(ipl); |
288 | interrupts_restore(ipl); |
298 | } |
289 | } |
299 | 290 | ||
300 | return t; |
291 | return t; |
301 | } |
292 | } |
302 | 293 | ||
303 | 294 | ||
304 | /** Make thread exiting |
295 | /** Make thread exiting |
305 | * |
296 | * |
306 | * End current thread execution and switch it to the exiting |
297 | * End current thread execution and switch it to the exiting |
307 | * state. All pending timeouts are executed. |
298 | * state. All pending timeouts are executed. |
308 | * |
299 | * |
309 | */ |
300 | */ |
310 | void thread_exit(void) |
301 | void thread_exit(void) |
311 | { |
302 | { |
312 | ipl_t ipl; |
303 | ipl_t ipl; |
313 | 304 | ||
314 | restart: |
305 | restart: |
315 | ipl = interrupts_disable(); |
306 | ipl = interrupts_disable(); |
316 | spinlock_lock(&THREAD->lock); |
307 | spinlock_lock(&THREAD->lock); |
317 | if (THREAD->timeout_pending) { /* busy waiting for timeouts in progress */ |
308 | if (THREAD->timeout_pending) { /* busy waiting for timeouts in progress */ |
318 | spinlock_unlock(&THREAD->lock); |
309 | spinlock_unlock(&THREAD->lock); |
319 | interrupts_restore(ipl); |
310 | interrupts_restore(ipl); |
320 | goto restart; |
311 | goto restart; |
321 | } |
312 | } |
322 | THREAD->state = Exiting; |
313 | THREAD->state = Exiting; |
323 | spinlock_unlock(&THREAD->lock); |
314 | spinlock_unlock(&THREAD->lock); |
324 | scheduler(); |
315 | scheduler(); |
325 | } |
316 | } |
326 | 317 | ||
327 | 318 | ||
328 | /** Thread sleep |
319 | /** Thread sleep |
329 | * |
320 | * |
330 | * Suspend execution of the current thread. |
321 | * Suspend execution of the current thread. |
331 | * |
322 | * |
332 | * @param sec Number of seconds to sleep. |
323 | * @param sec Number of seconds to sleep. |
333 | * |
324 | * |
334 | */ |
325 | */ |
335 | void thread_sleep(__u32 sec) |
326 | void thread_sleep(__u32 sec) |
336 | { |
327 | { |
337 | thread_usleep(sec*1000000); |
328 | thread_usleep(sec*1000000); |
338 | } |
329 | } |
339 | 330 | ||
340 | 331 | ||
341 | /** Thread usleep |
332 | /** Thread usleep |
342 | * |
333 | * |
343 | * Suspend execution of the current thread. |
334 | * Suspend execution of the current thread. |
344 | * |
335 | * |
345 | * @param usec Number of microseconds to sleep. |
336 | * @param usec Number of microseconds to sleep. |
346 | * |
337 | * |
347 | */ |
338 | */ |
348 | void thread_usleep(__u32 usec) |
339 | void thread_usleep(__u32 usec) |
349 | { |
340 | { |
350 | waitq_t wq; |
341 | waitq_t wq; |
351 | 342 | ||
352 | waitq_initialize(&wq); |
343 | waitq_initialize(&wq); |
353 | 344 | ||
354 | (void) waitq_sleep_timeout(&wq, usec, SYNCH_NON_BLOCKING); |
345 | (void) waitq_sleep_timeout(&wq, usec, SYNCH_NON_BLOCKING); |
355 | } |
346 | } |
356 | 347 | ||
357 | 348 | ||
358 | /** Register thread out-of-context invocation |
349 | /** Register thread out-of-context invocation |
359 | * |
350 | * |
360 | * Register a function and its argument to be executed |
351 | * Register a function and its argument to be executed |
361 | * on next context switch to the current thread. |
352 | * on next context switch to the current thread. |
362 | * |
353 | * |
363 | * @param call_me Out-of-context function. |
354 | * @param call_me Out-of-context function. |
364 | * @param call_me_with Out-of-context function argument. |
355 | * @param call_me_with Out-of-context function argument. |
365 | * |
356 | * |
366 | */ |
357 | */ |
367 | void thread_register_call_me(void (* call_me)(void *), void *call_me_with) |
358 | void thread_register_call_me(void (* call_me)(void *), void *call_me_with) |
368 | { |
359 | { |
369 | ipl_t ipl; |
360 | ipl_t ipl; |
370 | 361 | ||
371 | ipl = interrupts_disable(); |
362 | ipl = interrupts_disable(); |
372 | spinlock_lock(&THREAD->lock); |
363 | spinlock_lock(&THREAD->lock); |
373 | THREAD->call_me = call_me; |
364 | THREAD->call_me = call_me; |
374 | THREAD->call_me_with = call_me_with; |
365 | THREAD->call_me_with = call_me_with; |
375 | spinlock_unlock(&THREAD->lock); |
366 | spinlock_unlock(&THREAD->lock); |
376 | interrupts_restore(ipl); |
367 | interrupts_restore(ipl); |
377 | } |
368 | } |
378 | 369 | ||
379 | /** Print list of threads debug info */ |
370 | /** Print list of threads debug info */ |
380 | void thread_print_list(void) |
371 | void thread_print_list(void) |
381 | { |
372 | { |
382 | link_t *cur; |
373 | link_t *cur; |
383 | thread_t *t; |
374 | thread_t *t; |
384 | ipl_t ipl; |
375 | ipl_t ipl; |
385 | 376 | ||
386 | /* Messing with thread structures, avoid deadlock */ |
377 | /* Messing with thread structures, avoid deadlock */ |
387 | ipl = interrupts_disable(); |
378 | ipl = interrupts_disable(); |
388 | spinlock_lock(&threads_lock); |
379 | spinlock_lock(&threads_lock); |
389 | 380 | ||
390 | for (cur=threads_head.next; cur!=&threads_head; cur=cur->next) { |
381 | for (cur=threads_head.next; cur!=&threads_head; cur=cur->next) { |
391 | t = list_get_instance(cur, thread_t, threads_link); |
382 | t = list_get_instance(cur, thread_t, threads_link); |
392 | printf("Thr: %d(%s) ", t->tid, thread_states[t->state]); |
383 | printf("Thr: %d(%s) ", t->tid, thread_states[t->state]); |
393 | if (t->cpu) |
384 | if (t->cpu) |
394 | printf("cpu%d ", t->cpu->id); |
385 | printf("cpu%d ", t->cpu->id); |
395 | 386 | ||
396 | printf("\n"); |
387 | printf("\n"); |
397 | } |
388 | } |
398 | 389 | ||
399 | spinlock_unlock(&threads_lock); |
390 | spinlock_unlock(&threads_lock); |
400 | interrupts_enable(); |
391 | interrupts_enable(); |
401 | } |
392 | } |
402 | 393 |