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