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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
#ifdef ARCH_HAS_FPU
-
 
67
slab_cache_t *fpu_context_slab;
-
 
68
#endif
66
 
69
 
67
 
70
 
68
/** Thread wrapper
71
/** Thread wrapper
69
 *
72
 *
70
 * This wrapper is provided to ensure that every thread
73
 * This wrapper is provided to ensure that every thread
71
 * makes a call to thread_exit() when its implementing
74
 * makes a call to thread_exit() when its implementing
72
 * function returns.
75
 * function returns.
73
 *
76
 *
74
 * interrupts_disable() is assumed.
77
 * interrupts_disable() is assumed.
75
 *
78
 *
76
 */
79
 */
77
static void cushion(void)
80
static void cushion(void)
78
{
81
{
79
    void (*f)(void *) = THREAD->thread_code;
82
    void (*f)(void *) = THREAD->thread_code;
80
    void *arg = THREAD->thread_arg;
83
    void *arg = THREAD->thread_arg;
81
 
84
 
82
    /* this is where each thread wakes up after its creation */
85
    /* this is where each thread wakes up after its creation */
83
    before_thread_runs();
86
    before_thread_runs();
84
 
87
 
85
    spinlock_unlock(&THREAD->lock);
88
    spinlock_unlock(&THREAD->lock);
86
    interrupts_enable();
89
    interrupts_enable();
87
 
90
 
88
    f(arg);
91
    f(arg);
89
    thread_exit();
92
    thread_exit();
90
    /* not reached */
93
    /* not reached */
91
}
94
}
92
 
95
 
93
/** Initialization and allocation for thread_t structure */
96
/** Initialization and allocation for thread_t structure */
94
static int thr_constructor(void *obj, int kmflags)
97
static int thr_constructor(void *obj, int kmflags)
95
{
98
{
96
    thread_t *t = (thread_t *)obj;
99
    thread_t *t = (thread_t *)obj;
97
    pfn_t pfn;
100
    pfn_t pfn;
98
    int status;
101
    int status;
99
 
102
 
100
    spinlock_initialize(&t->lock, "thread_t_lock");
103
    spinlock_initialize(&t->lock, "thread_t_lock");
101
    link_initialize(&t->rq_link);
104
    link_initialize(&t->rq_link);
102
    link_initialize(&t->wq_link);
105
    link_initialize(&t->wq_link);
103
    link_initialize(&t->th_link);
106
    link_initialize(&t->th_link);
104
    link_initialize(&t->threads_link);
107
    link_initialize(&t->threads_link);
105
   
108
   
-
 
109
#ifdef ARCH_HAS_FPU
-
 
110
#  ifdef CONFIG_FPU_LAZY
-
 
111
    t->saved_fpu_context = NULL;
-
 
112
#  else
-
 
113
    t->saved_fpu_context = slab_alloc(fpu_context_slab,kmflags);
-
 
114
    if (!t->saved_fpu_context)
-
 
115
        return -1;
-
 
116
#  endif
-
 
117
#endif  
-
 
118
 
106
    pfn = frame_alloc_rc(ONE_FRAME, FRAME_KA | kmflags,&status);
119
    pfn = frame_alloc_rc(ONE_FRAME, FRAME_KA | kmflags,&status);
107
    if (status)
120
    if (status) {
-
 
121
#ifdef ARCH_HAS_FPU
-
 
122
        if (t->saved_fpu_context)
-
 
123
            slab_free(fpu_context_slab,t->saved_fpu_context);
-
 
124
#endif
108
        return -1;
125
        return -1;
-
 
126
    }
109
    t->kstack = (__u8 *)PA2KA(PFN2ADDR(pfn));
127
    t->kstack = (__u8 *)PA2KA(PFN2ADDR(pfn));
110
 
128
 
111
    return 0;
129
    return 0;
112
}
130
}
113
 
131
 
114
/** Destruction of thread_t object */
132
/** Destruction of thread_t object */
115
static int thr_destructor(void *obj)
133
static int thr_destructor(void *obj)
116
{
134
{
117
    thread_t *t = (thread_t *)obj;
135
    thread_t *t = (thread_t *)obj;
118
 
136
 
119
    frame_free(ADDR2PFN(KA2PA(t->kstack)));
137
    frame_free(ADDR2PFN(KA2PA(t->kstack)));
-
 
138
#ifdef ARCH_HAS_FPU
-
 
139
    if (t->saved_fpu_context)
-
 
140
        slab_free(fpu_context_slab,t->saved_fpu_context);
-
 
141
#endif
120
    return 1; /* One page freed */
142
    return 1; /* One page freed */
121
}
143
}
122
 
144
 
123
/** Initialize threads
145
/** Initialize threads
124
 *
146
 *
125
 * Initialize kernel threads support.
147
 * Initialize kernel threads support.
126
 *
148
 *
127
 */
149
 */
128
void thread_init(void)
150
void thread_init(void)
129
{
151
{
130
    THREAD = NULL;
152
    THREAD = NULL;
131
    atomic_set(&nrdy,0);
153
    atomic_set(&nrdy,0);
132
    thread_slab = slab_cache_create("thread_slab",
154
    thread_slab = slab_cache_create("thread_slab",
133
                    sizeof(thread_t),0,
155
                    sizeof(thread_t),0,
134
                    thr_constructor, thr_destructor, 0);
156
                    thr_constructor, thr_destructor, 0);
-
 
157
#ifdef ARCH_HAS_FPU
-
 
158
    fpu_context_slab = slab_cache_create("fpu_slab",
-
 
159
                         sizeof(fpu_context_t),
-
 
160
                         FPU_CONTEXT_ALIGN,
-
 
161
                         NULL, NULL, 0);
-
 
162
#endif
135
}
163
}
136
 
164
 
137
 
165
 
138
/** Make thread ready
166
/** Make thread ready
139
 *
167
 *
140
 * Switch thread t to the ready state.
168
 * Switch thread t to the ready state.
141
 *
169
 *
142
 * @param t Thread to make ready.
170
 * @param t Thread to make ready.
143
 *
171
 *
144
 */
172
 */
145
void thread_ready(thread_t *t)
173
void thread_ready(thread_t *t)
146
{
174
{
147
    cpu_t *cpu;
175
    cpu_t *cpu;
148
    runq_t *r;
176
    runq_t *r;
149
    ipl_t ipl;
177
    ipl_t ipl;
150
    int i, avg;
178
    int i, avg;
151
 
179
 
152
    ipl = interrupts_disable();
180
    ipl = interrupts_disable();
153
 
181
 
154
    spinlock_lock(&t->lock);
182
    spinlock_lock(&t->lock);
155
 
183
 
156
    i = (t->priority < RQ_COUNT -1) ? ++t->priority : t->priority;
184
    i = (t->priority < RQ_COUNT -1) ? ++t->priority : t->priority;
157
   
185
   
158
    cpu = CPU;
186
    cpu = CPU;
159
    if (t->flags & X_WIRED) {
187
    if (t->flags & X_WIRED) {
160
        cpu = t->cpu;
188
        cpu = t->cpu;
161
    }
189
    }
162
    spinlock_unlock(&t->lock);
190
    spinlock_unlock(&t->lock);
163
   
191
   
164
    /*
192
    /*
165
     * Append t to respective ready queue on respective processor.
193
     * Append t to respective ready queue on respective processor.
166
     */
194
     */
167
    r = &cpu->rq[i];
195
    r = &cpu->rq[i];
168
    spinlock_lock(&r->lock);
196
    spinlock_lock(&r->lock);
169
    list_append(&t->rq_link, &r->rq_head);
197
    list_append(&t->rq_link, &r->rq_head);
170
    r->n++;
198
    r->n++;
171
    spinlock_unlock(&r->lock);
199
    spinlock_unlock(&r->lock);
172
 
200
 
173
    atomic_inc(&nrdy);
201
    atomic_inc(&nrdy);
174
    avg = atomic_get(&nrdy) / config.cpu_active;
202
    avg = atomic_get(&nrdy) / config.cpu_active;
175
    atomic_inc(&cpu->nrdy);
203
    atomic_inc(&cpu->nrdy);
176
 
204
 
177
    interrupts_restore(ipl);
205
    interrupts_restore(ipl);
178
}
206
}
179
 
207
 
180
 
208
 
181
/** Destroy thread memory structure
209
/** Destroy thread memory structure
182
 *
210
 *
183
 * Detach thread from all queues, cpus etc. and destroy it.
211
 * Detach thread from all queues, cpus etc. and destroy it.
184
 *
212
 *
185
 * Assume thread->lock is held!!
213
 * Assume thread->lock is held!!
186
 */
214
 */
187
void thread_destroy(thread_t *t)
215
void thread_destroy(thread_t *t)
188
{
216
{
189
    ASSERT(t->state == Exiting);
217
    ASSERT(t->state == Exiting);
190
    ASSERT(t->task);
218
    ASSERT(t->task);
191
    ASSERT(t->cpu);
219
    ASSERT(t->cpu);
192
 
220
 
193
    spinlock_lock(&t->cpu->lock);
221
    spinlock_lock(&t->cpu->lock);
194
    if(t->cpu->fpu_owner==t)
222
    if(t->cpu->fpu_owner==t)
195
        t->cpu->fpu_owner=NULL;
223
        t->cpu->fpu_owner=NULL;
196
    spinlock_unlock(&t->cpu->lock);
224
    spinlock_unlock(&t->cpu->lock);
197
 
225
 
198
    /*
226
    /*
199
     * Detach from the containing task.
227
     * Detach from the containing task.
200
     */
228
     */
201
    spinlock_lock(&t->task->lock);
229
    spinlock_lock(&t->task->lock);
202
    list_remove(&t->th_link);
230
    list_remove(&t->th_link);
203
    spinlock_unlock(&t->task->lock);
231
    spinlock_unlock(&t->task->lock);
204
   
232
   
205
    spinlock_unlock(&t->lock);
233
    spinlock_unlock(&t->lock);
206
   
234
   
207
    spinlock_lock(&threads_lock);
235
    spinlock_lock(&threads_lock);
208
    list_remove(&t->threads_link);
236
    list_remove(&t->threads_link);
209
    spinlock_unlock(&threads_lock);
237
    spinlock_unlock(&threads_lock);
210
   
238
   
211
    slab_free(thread_slab, t);
239
    slab_free(thread_slab, t);
212
}
240
}
213
 
241
 
214
 
242
 
215
/** Create new thread
243
/** Create new thread
216
 *
244
 *
217
 * Create a new thread.
245
 * Create a new thread.
218
 *
246
 *
219
 * @param func  Thread's implementing function.
247
 * @param func  Thread's implementing function.
220
 * @param arg   Thread's implementing function argument.
248
 * @param arg   Thread's implementing function argument.
221
 * @param task  Task to which the thread belongs.
249
 * @param task  Task to which the thread belongs.
222
 * @param flags Thread flags.
250
 * @param flags Thread flags.
223
 *
251
 *
224
 * @return New thread's structure on success, NULL on failure.
252
 * @return New thread's structure on success, NULL on failure.
225
 *
253
 *
226
 */
254
 */
227
thread_t *thread_create(void (* func)(void *), void *arg, task_t *task, int flags)
255
thread_t *thread_create(void (* func)(void *), void *arg, task_t *task, int flags)
228
{
256
{
229
    thread_t *t;
257
    thread_t *t;
230
    ipl_t ipl;
258
    ipl_t ipl;
231
   
259
   
232
    t = (thread_t *) slab_alloc(thread_slab, 0);
260
    t = (thread_t *) slab_alloc(thread_slab, 0);
233
    if (!t)
261
    if (!t)
234
        return NULL;
262
        return NULL;
235
   
263
   
236
    /* Not needed, but good for debugging */
264
    /* Not needed, but good for debugging */
237
    memsetb((__address)t->kstack, THREAD_STACK_SIZE, 0);
265
    memsetb((__address)t->kstack, THREAD_STACK_SIZE, 0);
238
   
266
   
239
    ipl = interrupts_disable();
267
    ipl = interrupts_disable();
240
    spinlock_lock(&tidlock);
268
    spinlock_lock(&tidlock);
241
    t->tid = ++last_tid;
269
    t->tid = ++last_tid;
242
    spinlock_unlock(&tidlock);
270
    spinlock_unlock(&tidlock);
243
    interrupts_restore(ipl);
271
    interrupts_restore(ipl);
244
   
272
   
245
    context_save(&t->saved_context);
273
    context_save(&t->saved_context);
246
    context_set(&t->saved_context, FADDR(cushion), (__address) t->kstack, THREAD_STACK_SIZE);
274
    context_set(&t->saved_context, FADDR(cushion), (__address) t->kstack, THREAD_STACK_SIZE);
247
   
275
   
248
    the_initialize((the_t *) t->kstack);
276
    the_initialize((the_t *) t->kstack);
249
   
277
   
250
    ipl = interrupts_disable();
278
    ipl = interrupts_disable();
251
    t->saved_context.ipl = interrupts_read();
279
    t->saved_context.ipl = interrupts_read();
252
    interrupts_restore(ipl);
280
    interrupts_restore(ipl);
253
   
281
   
254
    t->thread_code = func;
282
    t->thread_code = func;
255
    t->thread_arg = arg;
283
    t->thread_arg = arg;
256
    t->ticks = -1;
284
    t->ticks = -1;
257
    t->priority = -1;       /* start in rq[0] */
285
    t->priority = -1;       /* start in rq[0] */
258
    t->cpu = NULL;
286
    t->cpu = NULL;
259
    t->flags = 0;
287
    t->flags = 0;
260
    t->state = Entering;
288
    t->state = Entering;
261
    t->call_me = NULL;
289
    t->call_me = NULL;
262
    t->call_me_with = NULL;
290
    t->call_me_with = NULL;
263
   
291
   
264
    timeout_initialize(&t->sleep_timeout);
292
    timeout_initialize(&t->sleep_timeout);
265
    t->sleep_queue = NULL;
293
    t->sleep_queue = NULL;
266
    t->timeout_pending = 0;
294
    t->timeout_pending = 0;
267
   
295
   
268
    t->rwlock_holder_type = RWLOCK_NONE;
296
    t->rwlock_holder_type = RWLOCK_NONE;
269
       
297
       
270
    t->task = task;
298
    t->task = task;
271
   
299
   
272
    t->fpu_context_exists = 0;
300
    t->fpu_context_exists = 0;
273
    t->fpu_context_engaged = 0;
301
    t->fpu_context_engaged = 0;
274
   
302
   
275
    /*
303
    /*
276
     * Register this thread in the system-wide list.
304
     * Register this thread in the system-wide list.
277
     */
305
     */
278
    ipl = interrupts_disable();
306
    ipl = interrupts_disable();
279
    spinlock_lock(&threads_lock);
307
    spinlock_lock(&threads_lock);
280
    list_append(&t->threads_link, &threads_head);
308
    list_append(&t->threads_link, &threads_head);
281
    spinlock_unlock(&threads_lock);
309
    spinlock_unlock(&threads_lock);
282
   
310
   
283
    /*
311
    /*
284
     * Attach to the containing task.
312
     * Attach to the containing task.
285
     */
313
     */
286
    spinlock_lock(&task->lock);
314
    spinlock_lock(&task->lock);
287
    list_append(&t->th_link, &task->th_head);
315
    list_append(&t->th_link, &task->th_head);
288
    spinlock_unlock(&task->lock);
316
    spinlock_unlock(&task->lock);
289
   
317
   
290
    interrupts_restore(ipl);
318
    interrupts_restore(ipl);
291
   
319
   
292
    return t;
320
    return t;
293
}
321
}
294
 
322
 
295
 
323
 
296
/** Make thread exiting
324
/** Make thread exiting
297
 *
325
 *
298
 * End current thread execution and switch it to the exiting
326
 * End current thread execution and switch it to the exiting
299
 * state. All pending timeouts are executed.
327
 * state. All pending timeouts are executed.
300
 *
328
 *
301
 */
329
 */
302
void thread_exit(void)
330
void thread_exit(void)
303
{
331
{
304
    ipl_t ipl;
332
    ipl_t ipl;
305
 
333
 
306
restart:
334
restart:
307
    ipl = interrupts_disable();
335
    ipl = interrupts_disable();
308
    spinlock_lock(&THREAD->lock);
336
    spinlock_lock(&THREAD->lock);
309
    if (THREAD->timeout_pending) { /* busy waiting for timeouts in progress */
337
    if (THREAD->timeout_pending) { /* busy waiting for timeouts in progress */
310
        spinlock_unlock(&THREAD->lock);
338
        spinlock_unlock(&THREAD->lock);
311
        interrupts_restore(ipl);
339
        interrupts_restore(ipl);
312
        goto restart;
340
        goto restart;
313
    }
341
    }
314
    THREAD->state = Exiting;
342
    THREAD->state = Exiting;
315
    spinlock_unlock(&THREAD->lock);
343
    spinlock_unlock(&THREAD->lock);
316
    scheduler();
344
    scheduler();
317
}
345
}
318
 
346
 
319
 
347
 
320
/** Thread sleep
348
/** Thread sleep
321
 *
349
 *
322
 * Suspend execution of the current thread.
350
 * Suspend execution of the current thread.
323
 *
351
 *
324
 * @param sec Number of seconds to sleep.
352
 * @param sec Number of seconds to sleep.
325
 *
353
 *
326
 */
354
 */
327
void thread_sleep(__u32 sec)
355
void thread_sleep(__u32 sec)
328
{
356
{
329
    thread_usleep(sec*1000000);
357
    thread_usleep(sec*1000000);
330
}
358
}
331
 
359
 
332
 
360
 
333
/** Thread usleep
361
/** Thread usleep
334
 *
362
 *
335
 * Suspend execution of the current thread.
363
 * Suspend execution of the current thread.
336
 *
364
 *
337
 * @param usec Number of microseconds to sleep.
365
 * @param usec Number of microseconds to sleep.
338
 *
366
 *
339
 */
367
 */
340
void thread_usleep(__u32 usec)
368
void thread_usleep(__u32 usec)
341
{
369
{
342
    waitq_t wq;
370
    waitq_t wq;
343
                 
371
                 
344
    waitq_initialize(&wq);
372
    waitq_initialize(&wq);
345
 
373
 
346
    (void) waitq_sleep_timeout(&wq, usec, SYNCH_NON_BLOCKING);
374
    (void) waitq_sleep_timeout(&wq, usec, SYNCH_NON_BLOCKING);
347
}
375
}
348
 
376
 
349
 
377
 
350
/** Register thread out-of-context invocation
378
/** Register thread out-of-context invocation
351
 *
379
 *
352
 * Register a function and its argument to be executed
380
 * Register a function and its argument to be executed
353
 * on next context switch to the current thread.
381
 * on next context switch to the current thread.
354
 *
382
 *
355
 * @param call_me      Out-of-context function.
383
 * @param call_me      Out-of-context function.
356
 * @param call_me_with Out-of-context function argument.
384
 * @param call_me_with Out-of-context function argument.
357
 *
385
 *
358
 */
386
 */
359
void thread_register_call_me(void (* call_me)(void *), void *call_me_with)
387
void thread_register_call_me(void (* call_me)(void *), void *call_me_with)
360
{
388
{
361
    ipl_t ipl;
389
    ipl_t ipl;
362
   
390
   
363
    ipl = interrupts_disable();
391
    ipl = interrupts_disable();
364
    spinlock_lock(&THREAD->lock);
392
    spinlock_lock(&THREAD->lock);
365
    THREAD->call_me = call_me;
393
    THREAD->call_me = call_me;
366
    THREAD->call_me_with = call_me_with;
394
    THREAD->call_me_with = call_me_with;
367
    spinlock_unlock(&THREAD->lock);
395
    spinlock_unlock(&THREAD->lock);
368
    interrupts_restore(ipl);
396
    interrupts_restore(ipl);
369
}
397
}
370
 
398
 
371
/** Print list of threads debug info */
399
/** Print list of threads debug info */
372
void thread_print_list(void)
400
void thread_print_list(void)
373
{
401
{
374
    link_t *cur;
402
    link_t *cur;
375
    thread_t *t;
403
    thread_t *t;
376
    ipl_t ipl;
404
    ipl_t ipl;
377
   
405
   
378
    /* Messing with thread structures, avoid deadlock */
406
    /* Messing with thread structures, avoid deadlock */
379
    ipl = interrupts_disable();
407
    ipl = interrupts_disable();
380
    spinlock_lock(&threads_lock);
408
    spinlock_lock(&threads_lock);
381
 
409
 
382
    for (cur=threads_head.next; cur!=&threads_head; cur=cur->next) {
410
    for (cur=threads_head.next; cur!=&threads_head; cur=cur->next) {
383
        t = list_get_instance(cur, thread_t, threads_link);
411
        t = list_get_instance(cur, thread_t, threads_link);
384
        printf("Thr: %d(%s) ", t->tid, thread_states[t->state]);
412
        printf("Thr: %d(%s) ", t->tid, thread_states[t->state]);
385
        if (t->cpu)
413
        if (t->cpu)
386
            printf("cpu%d ", t->cpu->id);
414
            printf("cpu%d ", t->cpu->id);
387
       
415
       
388
        printf("\n");
416
        printf("\n");
389
    }
417
    }
390
 
418
 
391
    spinlock_unlock(&threads_lock);
419
    spinlock_unlock(&threads_lock);
392
    interrupts_enable();
420
    interrupts_enable();
393
}
421
}
394
 
422