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